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marcus.erl |
/******************************************************************************
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*
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* Copyright(c) 2005 - 2007 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
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*
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* The full GNU General Public License is included in this distribution in the
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* file called LICENSE.
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*
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* Contact Information:
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* James P. Ketrenos <ipw2100-admin@linux.intel.com>
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* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*
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*****************************************************************************/
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/skbuff.h>
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#include <linux/wireless.h>
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#include <net/mac80211.h>
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#include <net/ieee80211.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/delay.h>
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#include <linux/workqueue.h>
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#define IWL 4965
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#include "../net/mac80211/ieee80211_rate.h"
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#include "iwlwifi.h"
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#include "iwl-helpers.h"
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#define RS_NAME "iwl-4965-rs"
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#define NUM_TRY_BEFORE_ANTENNA_TOGGLE 1
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#define IWL_NUMBER_TRY 1
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#define IWL_HT_NUMBER_TRY 3
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#define IWL_RATE_MAX_WINDOW 62
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#define IWL_RATE_HIGH_TH 10880
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#define IWL_RATE_MIN_FAILURE_TH 6
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#define IWL_RATE_MIN_SUCCESS_TH 8
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#define IWL_RATE_DECREASE_TH 1920
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#define IWL_RATE_INCREASE_TH 8960
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#define IWL_RATE_SCALE_FLUSH_INTVL (2*HZ) /*2 seconds */
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static u8 rs_ht_to_legacy[] = {
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IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX,
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IWL_RATE_6M_INDEX, IWL_RATE_6M_INDEX,
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IWL_RATE_6M_INDEX,
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IWL_RATE_6M_INDEX, IWL_RATE_9M_INDEX,
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IWL_RATE_12M_INDEX, IWL_RATE_18M_INDEX,
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IWL_RATE_24M_INDEX, IWL_RATE_36M_INDEX,
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IWL_RATE_48M_INDEX, IWL_RATE_54M_INDEX
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};
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struct iwl_rate {
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u32 rate_n_flags;
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} __attribute__ ((packed));
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struct iwl_rate_scale_data {
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u64 data;
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s32 success_counter;
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s32 success_ratio;
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s32 counter;
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s32 average_tpt;
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unsigned long stamp;
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};
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struct iwl_scale_tbl_info {
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enum iwl_table_type lq_type;
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enum iwl_antenna_type antenna_type;
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u8 is_SGI;
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u8 is_fat;
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u8 is_dup;
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u8 action;
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s32 *expected_tpt;
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struct iwl_rate current_rate;
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struct iwl_rate_scale_data win[IWL_RATE_COUNT];
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};
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struct iwl_rate_scale_priv {
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u8 active_tbl;
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u8 enable_counter;
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u8 stay_in_tbl;
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u8 search_better_tbl;
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s32 last_tpt;
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u32 table_count_limit;
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u32 max_failure_limit;
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u32 max_success_limit;
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u32 table_count;
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u32 total_failed;
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u32 total_success;
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u32 flush_timer;
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u8 action_counter;
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u8 antenna;
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u8 valid_antenna;
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u8 is_green;
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u8 is_dup;
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u8 phymode;
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u8 ibss_sta_added;
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u32 supp_rates;
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u16 active_rate;
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u16 active_siso_rate;
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u16 active_mimo_rate;
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u16 active_rate_basic;
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struct iwl_link_quality_cmd lq;
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struct iwl_scale_tbl_info lq_info[LQ_SIZE];
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#ifdef CONFIG_MAC80211_DEBUGFS
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struct dentry *rs_sta_dbgfs_scale_table_file;
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struct dentry *rs_sta_dbgfs_stats_table_file;
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struct iwl_rate dbg_fixed;
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struct iwl_priv *drv;
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#endif
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};
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static void rs_rate_scale_perform(struct iwl_priv *priv,
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struct net_device *dev,
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struct ieee80211_hdr *hdr,
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struct sta_info *sta);
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static void rs_fill_link_cmd(struct iwl_rate_scale_priv *lq_data,
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struct iwl_rate *tx_mcs,
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struct iwl_link_quality_cmd *tbl);
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#ifdef CONFIG_MAC80211_DEBUGFS
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static void rs_dbgfs_set_mcs(struct iwl_rate_scale_priv *rs_priv,
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struct iwl_rate *mcs, int index);
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#else
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static void rs_dbgfs_set_mcs(struct iwl_rate_scale_priv *rs_priv,
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struct iwl_rate *mcs, int index)
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{}
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#endif
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static s32 expected_tpt_A[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 40, 57, 72, 98, 121, 154, 177, 186, 186
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};
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static s32 expected_tpt_G[IWL_RATE_COUNT] = {
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7, 13, 35, 58, 40, 57, 72, 98, 121, 154, 177, 186, 186
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};
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static s32 expected_tpt_siso20MHz[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 42, 42, 76, 102, 124, 159, 183, 193, 202
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};
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static s32 expected_tpt_siso20MHzSGI[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 46, 46, 82, 110, 132, 168, 192, 202, 211
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};
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static s32 expected_tpt_mimo20MHz[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 74, 74, 123, 155, 179, 214, 236, 244, 251
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};
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static s32 expected_tpt_mimo20MHzSGI[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 81, 81, 131, 164, 188, 222, 243, 251, 257
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};
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static s32 expected_tpt_siso40MHz[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 77, 77, 127, 160, 184, 220, 242, 250, 257
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};
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static s32 expected_tpt_siso40MHzSGI[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 83, 83, 135, 169, 193, 229, 250, 257, 264
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};
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static s32 expected_tpt_mimo40MHz[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 123, 123, 182, 214, 235, 264, 279, 285, 289
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};
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static s32 expected_tpt_mimo40MHzSGI[IWL_RATE_COUNT] = {
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0, 0, 0, 0, 131, 131, 191, 222, 242, 270, 284, 289, 293
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};
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static int iwl_lq_sync_callback(struct iwl_priv *priv,
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struct iwl_cmd *cmd, struct sk_buff *skb)
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{
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/*We didn't cache the SKB; let the caller free it */
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return 1;
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}
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static inline u8 iwl_rate_get_rate(u32 rate_n_flags)
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{
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return (u8)(rate_n_flags & 0xFF);
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}
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static int rs_send_lq_cmd(struct iwl_priv *priv,
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struct iwl_link_quality_cmd *lq, u8 flags)
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{
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#ifdef CONFIG_IWLWIFI_DEBUG
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int i;
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#endif
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int rc = -1;
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struct iwl_host_cmd cmd = {
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.id = REPLY_TX_LINK_QUALITY_CMD,
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.len = sizeof(struct iwl_link_quality_cmd),
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.meta.flags = flags,
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.data = lq,
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};
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if ((lq->sta_id == 0xFF) &&
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(priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
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return rc;
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if (lq->sta_id == 0xFF)
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lq->sta_id = IWL_AP_ID;
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IWL_DEBUG_RATE("lq station id 0x%x\n", lq->sta_id);
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IWL_DEBUG_RATE("lq dta 0x%X 0x%X\n",
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lq->general_params.single_stream_ant_msk,
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lq->general_params.dual_stream_ant_msk);
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#ifdef CONFIG_IWLWIFI_DEBUG
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for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
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IWL_DEBUG_RATE("lq index %d 0x%X\n",
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i, lq->rs_table[i].rate_n_flags);
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#endif
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if (flags & CMD_ASYNC)
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cmd.meta.u.callback = iwl_lq_sync_callback;
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if (iwl_is_associated(priv) && priv->assoc_station_added &&
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priv->lq_mngr.lq_ready)
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rc = iwl_send_cmd(priv, &cmd);
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return rc;
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}
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static int rs_rate_scale_clear_window(struct iwl_rate_scale_data *window)
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{
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window->data = 0;
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window->success_counter = 0;
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window->success_ratio = IWL_INVALID_VALUE;
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window->counter = 0;
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window->average_tpt = IWL_INVALID_VALUE;
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window->stamp = 0;
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return 0;
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}
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static int rs_collect_tx_data(struct iwl_rate_scale_data *windows,
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int scale_index, s32 tpt, u32 status)
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{
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int rc = 0;
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struct iwl_rate_scale_data *window = NULL;
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u64 mask;
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u8 win_size = IWL_RATE_MAX_WINDOW;
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s32 fail_count;
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if (scale_index < 0)
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return -1;
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if (scale_index >= IWL_RATE_COUNT)
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return -1;
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window = &(windows[scale_index]);
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if (window->counter >= win_size) {
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window->counter = win_size - 1;
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mask = 1;
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mask = (mask << (win_size - 1));
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if ((window->data & mask)) {
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window->data &= ~mask;
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window->success_counter = window->success_counter - 1;
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}
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}
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window->counter = window->counter + 1;
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mask = window->data;
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window->data = (mask << 1);
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if (status != 0) {
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window->success_counter = window->success_counter + 1;
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window->data |= 0x1;
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}
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if (window->counter > 0)
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window->success_ratio = 128 * (100 * window->success_counter)
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/ window->counter;
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else
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window->success_ratio = IWL_INVALID_VALUE;
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fail_count = window->counter - window->success_counter;
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| 297 |
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if ((fail_count >= IWL_RATE_MIN_FAILURE_TH) ||
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(window->success_counter >= IWL_RATE_MIN_SUCCESS_TH))
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window->average_tpt = (window->success_ratio * tpt + 64) / 128;
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else
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window->average_tpt = IWL_INVALID_VALUE;
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window->stamp = jiffies;
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return rc;
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}
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int static rs_mcs_from_tbl(struct iwl_rate *mcs_rate,
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struct iwl_scale_tbl_info *tbl,
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int index, u8 use_green)
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{
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int rc = 0;
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| 313 |
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if (is_legacy(tbl->lq_type)) {
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mcs_rate->rate_n_flags = iwl_rates[index].plcp;
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if (index >= IWL_FIRST_CCK_RATE && index <= IWL_LAST_CCK_RATE)
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mcs_rate->rate_n_flags |= RATE_MCS_CCK_MSK;
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| 319 |
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} else if (is_siso(tbl->lq_type)) {
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if (index > IWL_LAST_OFDM_RATE)
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index = IWL_LAST_OFDM_RATE;
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mcs_rate->rate_n_flags = iwl_rates[index].plcp_siso |
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RATE_MCS_HT_MSK;
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} else {
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if (index > IWL_LAST_OFDM_RATE)
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index = IWL_LAST_OFDM_RATE;
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mcs_rate->rate_n_flags = iwl_rates[index].plcp_mimo |
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RATE_MCS_HT_MSK;
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}
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| 330 |
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| 331 |
|
|
switch (tbl->antenna_type) {
|
| 332 |
|
|
case ANT_BOTH:
|
| 333 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_ANT_AB_MSK;
|
| 334 |
|
|
break;
|
| 335 |
|
|
case ANT_MAIN:
|
| 336 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_ANT_A_MSK;
|
| 337 |
|
|
break;
|
| 338 |
|
|
case ANT_AUX:
|
| 339 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_ANT_B_MSK;
|
| 340 |
|
|
break;
|
| 341 |
|
|
case ANT_NONE:
|
| 342 |
|
|
break;
|
| 343 |
|
|
}
|
| 344 |
|
|
|
| 345 |
|
|
if (is_legacy(tbl->lq_type))
|
| 346 |
|
|
return rc;
|
| 347 |
|
|
|
| 348 |
|
|
if (tbl->is_fat) {
|
| 349 |
|
|
if (tbl->is_dup)
|
| 350 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_DUP_MSK;
|
| 351 |
|
|
else
|
| 352 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_FAT_MSK;
|
| 353 |
|
|
}
|
| 354 |
|
|
if (tbl->is_SGI)
|
| 355 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_SGI_MSK;
|
| 356 |
|
|
|
| 357 |
|
|
if (use_green) {
|
| 358 |
|
|
mcs_rate->rate_n_flags |= RATE_MCS_GF_MSK;
|
| 359 |
|
|
if (is_siso(tbl->lq_type))
|
| 360 |
|
|
mcs_rate->rate_n_flags &= ~RATE_MCS_SGI_MSK;
|
| 361 |
|
|
}
|
| 362 |
|
|
return rc;
|
| 363 |
|
|
}
|
| 364 |
|
|
|
| 365 |
|
|
static int rs_get_tbl_info_from_mcs(const struct iwl_rate *mcs_rate,
|
| 366 |
|
|
int phymode, struct iwl_scale_tbl_info *tbl,
|
| 367 |
|
|
int *rate_idx)
|
| 368 |
|
|
{
|
| 369 |
|
|
int index;
|
| 370 |
|
|
u32 ant_msk;
|
| 371 |
|
|
|
| 372 |
|
|
index = iwl_rate_index_from_plcp(mcs_rate->rate_n_flags);
|
| 373 |
|
|
|
| 374 |
|
|
if (index == IWL_RATE_INVALID) {
|
| 375 |
|
|
*rate_idx = -1;
|
| 376 |
|
|
return -1;
|
| 377 |
|
|
}
|
| 378 |
|
|
tbl->is_SGI = 0;
|
| 379 |
|
|
tbl->is_fat = 0;
|
| 380 |
|
|
tbl->is_dup = 0;
|
| 381 |
|
|
tbl->antenna_type = ANT_BOTH;
|
| 382 |
|
|
|
| 383 |
|
|
if (!(mcs_rate->rate_n_flags & RATE_MCS_HT_MSK)) {
|
| 384 |
|
|
ant_msk = (mcs_rate->rate_n_flags & RATE_MCS_ANT_AB_MSK);
|
| 385 |
|
|
|
| 386 |
|
|
if (ant_msk == RATE_MCS_ANT_AB_MSK)
|
| 387 |
|
|
tbl->lq_type = LQ_NONE;
|
| 388 |
|
|
else {
|
| 389 |
|
|
|
| 390 |
|
|
if (phymode == MODE_IEEE80211A)
|
| 391 |
|
|
tbl->lq_type = LQ_A;
|
| 392 |
|
|
else
|
| 393 |
|
|
tbl->lq_type = LQ_G;
|
| 394 |
|
|
|
| 395 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_ANT_A_MSK)
|
| 396 |
|
|
tbl->antenna_type = ANT_MAIN;
|
| 397 |
|
|
else
|
| 398 |
|
|
tbl->antenna_type = ANT_AUX;
|
| 399 |
|
|
}
|
| 400 |
|
|
*rate_idx = index;
|
| 401 |
|
|
|
| 402 |
|
|
} else if (iwl_rate_get_rate(mcs_rate->rate_n_flags)
|
| 403 |
|
|
<= IWL_RATE_SISO_60M_PLCP) {
|
| 404 |
|
|
tbl->lq_type = LQ_SISO;
|
| 405 |
|
|
|
| 406 |
|
|
ant_msk = (mcs_rate->rate_n_flags & RATE_MCS_ANT_AB_MSK);
|
| 407 |
|
|
if (ant_msk == RATE_MCS_ANT_AB_MSK)
|
| 408 |
|
|
tbl->lq_type = LQ_NONE;
|
| 409 |
|
|
else {
|
| 410 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_ANT_A_MSK)
|
| 411 |
|
|
tbl->antenna_type = ANT_MAIN;
|
| 412 |
|
|
else
|
| 413 |
|
|
tbl->antenna_type = ANT_AUX;
|
| 414 |
|
|
}
|
| 415 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_SGI_MSK)
|
| 416 |
|
|
tbl->is_SGI = 1;
|
| 417 |
|
|
|
| 418 |
|
|
if ((mcs_rate->rate_n_flags & RATE_MCS_FAT_MSK) ||
|
| 419 |
|
|
(mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK))
|
| 420 |
|
|
tbl->is_fat = 1;
|
| 421 |
|
|
|
| 422 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK)
|
| 423 |
|
|
tbl->is_dup = 1;
|
| 424 |
|
|
|
| 425 |
|
|
*rate_idx = index;
|
| 426 |
|
|
} else {
|
| 427 |
|
|
tbl->lq_type = LQ_MIMO;
|
| 428 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_SGI_MSK)
|
| 429 |
|
|
tbl->is_SGI = 1;
|
| 430 |
|
|
|
| 431 |
|
|
if ((mcs_rate->rate_n_flags & RATE_MCS_FAT_MSK) ||
|
| 432 |
|
|
(mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK))
|
| 433 |
|
|
tbl->is_fat = 1;
|
| 434 |
|
|
|
| 435 |
|
|
if (mcs_rate->rate_n_flags & RATE_MCS_DUP_MSK)
|
| 436 |
|
|
tbl->is_dup = 1;
|
| 437 |
|
|
*rate_idx = index;
|
| 438 |
|
|
}
|
| 439 |
|
|
return 0;
|
| 440 |
|
|
}
|
| 441 |
|
|
|
| 442 |
|
|
static inline void rs_toggle_antenna(struct iwl_rate *new_rate,
|
| 443 |
|
|
struct iwl_scale_tbl_info *tbl)
|
| 444 |
|
|
{
|
| 445 |
|
|
if (tbl->antenna_type == ANT_AUX) {
|
| 446 |
|
|
tbl->antenna_type = ANT_MAIN;
|
| 447 |
|
|
new_rate->rate_n_flags &= ~RATE_MCS_ANT_B_MSK;
|
| 448 |
|
|
new_rate->rate_n_flags |= RATE_MCS_ANT_A_MSK;
|
| 449 |
|
|
} else {
|
| 450 |
|
|
tbl->antenna_type = ANT_AUX;
|
| 451 |
|
|
new_rate->rate_n_flags &= ~RATE_MCS_ANT_A_MSK;
|
| 452 |
|
|
new_rate->rate_n_flags |= RATE_MCS_ANT_B_MSK;
|
| 453 |
|
|
}
|
| 454 |
|
|
}
|
| 455 |
|
|
|
| 456 |
|
|
static inline s8 rs_use_green(struct iwl_priv *priv)
|
| 457 |
|
|
{
|
| 458 |
|
|
s8 rc = 0;
|
| 459 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 460 |
|
|
if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
|
| 461 |
|
|
return 0;
|
| 462 |
|
|
|
| 463 |
|
|
if ((priv->current_assoc_ht.is_green_field) &&
|
| 464 |
|
|
!(priv->current_assoc_ht.operating_mode & 0x4))
|
| 465 |
|
|
rc = 1;
|
| 466 |
|
|
#endif /*CONFIG_IWLWIFI_HT */
|
| 467 |
|
|
return rc;
|
| 468 |
|
|
}
|
| 469 |
|
|
|
| 470 |
|
|
/**
|
| 471 |
|
|
* rs_get_supported_rates - get the available rates
|
| 472 |
|
|
*
|
| 473 |
|
|
* if management frame or broadcast frame only return
|
| 474 |
|
|
* basic available rates.
|
| 475 |
|
|
*
|
| 476 |
|
|
*/
|
| 477 |
|
|
static void rs_get_supported_rates(struct iwl_rate_scale_priv *lq_data,
|
| 478 |
|
|
struct ieee80211_hdr *hdr,
|
| 479 |
|
|
enum iwl_table_type rate_type,
|
| 480 |
|
|
u16 *data_rate)
|
| 481 |
|
|
{
|
| 482 |
|
|
if (is_legacy(rate_type))
|
| 483 |
|
|
*data_rate = lq_data->active_rate;
|
| 484 |
|
|
else {
|
| 485 |
|
|
if (is_siso(rate_type))
|
| 486 |
|
|
*data_rate = lq_data->active_siso_rate;
|
| 487 |
|
|
else
|
| 488 |
|
|
*data_rate = lq_data->active_mimo_rate;
|
| 489 |
|
|
}
|
| 490 |
|
|
|
| 491 |
|
|
if (hdr && is_multicast_ether_addr(hdr->addr1) &&
|
| 492 |
|
|
lq_data->active_rate_basic)
|
| 493 |
|
|
*data_rate = lq_data->active_rate_basic;
|
| 494 |
|
|
}
|
| 495 |
|
|
|
| 496 |
|
|
static u16 rs_get_adjacent_rate(u8 index, u16 rate_mask, int rate_type)
|
| 497 |
|
|
{
|
| 498 |
|
|
u8 high = IWL_RATE_INVALID;
|
| 499 |
|
|
u8 low = IWL_RATE_INVALID;
|
| 500 |
|
|
|
| 501 |
|
|
/* 802.11A or ht walks to the next literal adjascent rate in
|
| 502 |
|
|
* the rate table */
|
| 503 |
|
|
if (is_a_band(rate_type) || !is_legacy(rate_type)) {
|
| 504 |
|
|
int i;
|
| 505 |
|
|
u32 mask;
|
| 506 |
|
|
|
| 507 |
|
|
/* Find the previous rate that is in the rate mask */
|
| 508 |
|
|
i = index - 1;
|
| 509 |
|
|
for (mask = (1 << i); i >= 0; i--, mask >>= 1) {
|
| 510 |
|
|
if (rate_mask & mask) {
|
| 511 |
|
|
low = i;
|
| 512 |
|
|
break;
|
| 513 |
|
|
}
|
| 514 |
|
|
}
|
| 515 |
|
|
|
| 516 |
|
|
/* Find the next rate that is in the rate mask */
|
| 517 |
|
|
i = index + 1;
|
| 518 |
|
|
for (mask = (1 << i); i < IWL_RATE_COUNT; i++, mask <<= 1) {
|
| 519 |
|
|
if (rate_mask & mask) {
|
| 520 |
|
|
high = i;
|
| 521 |
|
|
break;
|
| 522 |
|
|
}
|
| 523 |
|
|
}
|
| 524 |
|
|
|
| 525 |
|
|
return (high << 8) | low;
|
| 526 |
|
|
}
|
| 527 |
|
|
|
| 528 |
|
|
low = index;
|
| 529 |
|
|
while (low != IWL_RATE_INVALID) {
|
| 530 |
|
|
low = iwl_rates[low].prev_rs;
|
| 531 |
|
|
if (low == IWL_RATE_INVALID)
|
| 532 |
|
|
break;
|
| 533 |
|
|
if (rate_mask & (1 << low))
|
| 534 |
|
|
break;
|
| 535 |
|
|
IWL_DEBUG_RATE("Skipping masked lower rate: %d\n", low);
|
| 536 |
|
|
}
|
| 537 |
|
|
|
| 538 |
|
|
high = index;
|
| 539 |
|
|
while (high != IWL_RATE_INVALID) {
|
| 540 |
|
|
high = iwl_rates[high].next_rs;
|
| 541 |
|
|
if (high == IWL_RATE_INVALID)
|
| 542 |
|
|
break;
|
| 543 |
|
|
if (rate_mask & (1 << high))
|
| 544 |
|
|
break;
|
| 545 |
|
|
IWL_DEBUG_RATE("Skipping masked higher rate: %d\n", high);
|
| 546 |
|
|
}
|
| 547 |
|
|
|
| 548 |
|
|
return (high << 8) | low;
|
| 549 |
|
|
}
|
| 550 |
|
|
|
| 551 |
|
|
static int rs_get_lower_rate(struct iwl_rate_scale_priv *lq_data,
|
| 552 |
|
|
struct iwl_scale_tbl_info *tbl, u8 scale_index,
|
| 553 |
|
|
u8 ht_possible, struct iwl_rate *mcs_rate)
|
| 554 |
|
|
{
|
| 555 |
|
|
s32 low;
|
| 556 |
|
|
u16 rate_mask;
|
| 557 |
|
|
u16 high_low;
|
| 558 |
|
|
u8 switch_to_legacy = 0;
|
| 559 |
|
|
u8 is_green = lq_data->is_green;
|
| 560 |
|
|
|
| 561 |
|
|
/* check if we need to switch from HT to legacy rates.
|
| 562 |
|
|
* assumption is that mandatory rates (1Mbps or 6Mbps)
|
| 563 |
|
|
* are always supported (spec demand) */
|
| 564 |
|
|
if (!is_legacy(tbl->lq_type) && (!ht_possible || !scale_index)) {
|
| 565 |
|
|
switch_to_legacy = 1;
|
| 566 |
|
|
scale_index = rs_ht_to_legacy[scale_index];
|
| 567 |
|
|
if (lq_data->phymode == MODE_IEEE80211A)
|
| 568 |
|
|
tbl->lq_type = LQ_A;
|
| 569 |
|
|
else
|
| 570 |
|
|
tbl->lq_type = LQ_G;
|
| 571 |
|
|
|
| 572 |
|
|
if ((tbl->antenna_type == ANT_BOTH) ||
|
| 573 |
|
|
(tbl->antenna_type == ANT_NONE))
|
| 574 |
|
|
tbl->antenna_type = ANT_MAIN;
|
| 575 |
|
|
|
| 576 |
|
|
tbl->is_fat = 0;
|
| 577 |
|
|
tbl->is_SGI = 0;
|
| 578 |
|
|
}
|
| 579 |
|
|
|
| 580 |
|
|
rs_get_supported_rates(lq_data, NULL, tbl->lq_type, &rate_mask);
|
| 581 |
|
|
|
| 582 |
|
|
/* mask with station rate restriction */
|
| 583 |
|
|
if (is_legacy(tbl->lq_type)) {
|
| 584 |
|
|
if (lq_data->phymode == (u8) MODE_IEEE80211A)
|
| 585 |
|
|
rate_mask = (u16)(rate_mask &
|
| 586 |
|
|
(lq_data->supp_rates << IWL_FIRST_OFDM_RATE));
|
| 587 |
|
|
else
|
| 588 |
|
|
rate_mask = (u16)(rate_mask & lq_data->supp_rates);
|
| 589 |
|
|
}
|
| 590 |
|
|
|
| 591 |
|
|
/* if we did switched from HT to legacy check current rate */
|
| 592 |
|
|
if ((switch_to_legacy) &&
|
| 593 |
|
|
(rate_mask & (1 << scale_index))) {
|
| 594 |
|
|
rs_mcs_from_tbl(mcs_rate, tbl, scale_index, is_green);
|
| 595 |
|
|
return 0;
|
| 596 |
|
|
}
|
| 597 |
|
|
|
| 598 |
|
|
high_low = rs_get_adjacent_rate(scale_index, rate_mask, tbl->lq_type);
|
| 599 |
|
|
low = high_low & 0xff;
|
| 600 |
|
|
|
| 601 |
|
|
if (low != IWL_RATE_INVALID)
|
| 602 |
|
|
rs_mcs_from_tbl(mcs_rate, tbl, low, is_green);
|
| 603 |
|
|
else
|
| 604 |
|
|
rs_mcs_from_tbl(mcs_rate, tbl, scale_index, is_green);
|
| 605 |
|
|
|
| 606 |
|
|
return 0;
|
| 607 |
|
|
}
|
| 608 |
|
|
|
| 609 |
|
|
static void rs_tx_status(void *priv_rate,
|
| 610 |
|
|
struct net_device *dev,
|
| 611 |
|
|
struct sk_buff *skb,
|
| 612 |
|
|
struct ieee80211_tx_status *tx_resp)
|
| 613 |
|
|
{
|
| 614 |
|
|
int status;
|
| 615 |
|
|
u8 retries;
|
| 616 |
|
|
int rs_index, index = 0;
|
| 617 |
|
|
struct iwl_rate_scale_priv *lq;
|
| 618 |
|
|
struct iwl_link_quality_cmd *table;
|
| 619 |
|
|
struct sta_info *sta;
|
| 620 |
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
| 621 |
|
|
struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
|
| 622 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 623 |
|
|
struct iwl_rate_scale_data *window = NULL;
|
| 624 |
|
|
struct iwl_rate_scale_data *search_win = NULL;
|
| 625 |
|
|
struct iwl_rate tx_mcs;
|
| 626 |
|
|
struct iwl_scale_tbl_info tbl_type;
|
| 627 |
|
|
struct iwl_scale_tbl_info *curr_tbl, *search_tbl;
|
| 628 |
|
|
u8 active_index = 0;
|
| 629 |
|
|
u16 fc = le16_to_cpu(hdr->frame_control);
|
| 630 |
|
|
s32 tpt = 0;
|
| 631 |
|
|
|
| 632 |
|
|
IWL_DEBUG_RATE_LIMIT("get frame ack response, update rate scale window\n");
|
| 633 |
|
|
|
| 634 |
|
|
if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1))
|
| 635 |
|
|
return;
|
| 636 |
|
|
|
| 637 |
|
|
retries = tx_resp->retry_count;
|
| 638 |
|
|
|
| 639 |
|
|
if (retries > 15)
|
| 640 |
|
|
retries = 15;
|
| 641 |
|
|
|
| 642 |
|
|
|
| 643 |
|
|
sta = sta_info_get(local, hdr->addr1);
|
| 644 |
|
|
|
| 645 |
|
|
if (!sta || !sta->rate_ctrl_priv) {
|
| 646 |
|
|
if (sta)
|
| 647 |
|
|
sta_info_put(sta);
|
| 648 |
|
|
return;
|
| 649 |
|
|
}
|
| 650 |
|
|
|
| 651 |
|
|
lq = (struct iwl_rate_scale_priv *)sta->rate_ctrl_priv;
|
| 652 |
|
|
|
| 653 |
|
|
if (!priv->lq_mngr.lq_ready)
|
| 654 |
|
|
return;
|
| 655 |
|
|
|
| 656 |
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && !lq->ibss_sta_added)
|
| 657 |
|
|
return;
|
| 658 |
|
|
|
| 659 |
|
|
table = &lq->lq;
|
| 660 |
|
|
active_index = lq->active_tbl;
|
| 661 |
|
|
|
| 662 |
|
|
lq->antenna = (lq->valid_antenna & local->hw.conf.antenna_sel_tx);
|
| 663 |
|
|
if (!lq->antenna)
|
| 664 |
|
|
lq->antenna = lq->valid_antenna;
|
| 665 |
|
|
|
| 666 |
|
|
lq->antenna = lq->valid_antenna;
|
| 667 |
|
|
curr_tbl = &(lq->lq_info[active_index]);
|
| 668 |
|
|
search_tbl = &(lq->lq_info[(1 - active_index)]);
|
| 669 |
|
|
window = (struct iwl_rate_scale_data *)
|
| 670 |
|
|
&(curr_tbl->win[0]);
|
| 671 |
|
|
search_win = (struct iwl_rate_scale_data *)
|
| 672 |
|
|
&(search_tbl->win[0]);
|
| 673 |
|
|
|
| 674 |
|
|
tx_mcs.rate_n_flags = tx_resp->control.tx_rate;
|
| 675 |
|
|
|
| 676 |
|
|
rs_get_tbl_info_from_mcs(&tx_mcs, priv->phymode,
|
| 677 |
|
|
&tbl_type, &rs_index);
|
| 678 |
|
|
if ((rs_index < 0) || (rs_index >= IWL_RATE_COUNT)) {
|
| 679 |
|
|
IWL_DEBUG_RATE("bad rate index at: %d rate 0x%X\n",
|
| 680 |
|
|
rs_index, tx_mcs.rate_n_flags);
|
| 681 |
|
|
sta_info_put(sta);
|
| 682 |
|
|
return;
|
| 683 |
|
|
}
|
| 684 |
|
|
|
| 685 |
|
|
if (retries &&
|
| 686 |
|
|
(tx_mcs.rate_n_flags !=
|
| 687 |
|
|
le32_to_cpu(table->rs_table[0].rate_n_flags))) {
|
| 688 |
|
|
IWL_DEBUG_RATE("initial rate does not match 0x%x 0x%x\n",
|
| 689 |
|
|
tx_mcs.rate_n_flags,
|
| 690 |
|
|
le32_to_cpu(table->rs_table[0].rate_n_flags));
|
| 691 |
|
|
sta_info_put(sta);
|
| 692 |
|
|
return;
|
| 693 |
|
|
}
|
| 694 |
|
|
|
| 695 |
|
|
while (retries) {
|
| 696 |
|
|
tx_mcs.rate_n_flags =
|
| 697 |
|
|
le32_to_cpu(table->rs_table[index].rate_n_flags);
|
| 698 |
|
|
rs_get_tbl_info_from_mcs(&tx_mcs, priv->phymode,
|
| 699 |
|
|
&tbl_type, &rs_index);
|
| 700 |
|
|
|
| 701 |
|
|
if ((tbl_type.lq_type == search_tbl->lq_type) &&
|
| 702 |
|
|
(tbl_type.antenna_type == search_tbl->antenna_type) &&
|
| 703 |
|
|
(tbl_type.is_SGI == search_tbl->is_SGI)) {
|
| 704 |
|
|
if (search_tbl->expected_tpt)
|
| 705 |
|
|
tpt = search_tbl->expected_tpt[rs_index];
|
| 706 |
|
|
else
|
| 707 |
|
|
tpt = 0;
|
| 708 |
|
|
rs_collect_tx_data(search_win,
|
| 709 |
|
|
rs_index, tpt, 0);
|
| 710 |
|
|
} else if ((tbl_type.lq_type == curr_tbl->lq_type) &&
|
| 711 |
|
|
(tbl_type.antenna_type == curr_tbl->antenna_type) &&
|
| 712 |
|
|
(tbl_type.is_SGI == curr_tbl->is_SGI)) {
|
| 713 |
|
|
if (curr_tbl->expected_tpt)
|
| 714 |
|
|
tpt = curr_tbl->expected_tpt[rs_index];
|
| 715 |
|
|
else
|
| 716 |
|
|
tpt = 0;
|
| 717 |
|
|
rs_collect_tx_data(window, rs_index, tpt, 0);
|
| 718 |
|
|
}
|
| 719 |
|
|
if (lq->stay_in_tbl)
|
| 720 |
|
|
lq->total_failed++;
|
| 721 |
|
|
--retries;
|
| 722 |
|
|
index++;
|
| 723 |
|
|
|
| 724 |
|
|
}
|
| 725 |
|
|
|
| 726 |
|
|
if (!tx_resp->retry_count)
|
| 727 |
|
|
tx_mcs.rate_n_flags = tx_resp->control.tx_rate;
|
| 728 |
|
|
else
|
| 729 |
|
|
tx_mcs.rate_n_flags =
|
| 730 |
|
|
le32_to_cpu(table->rs_table[index].rate_n_flags);
|
| 731 |
|
|
|
| 732 |
|
|
rs_get_tbl_info_from_mcs(&tx_mcs, priv->phymode,
|
| 733 |
|
|
&tbl_type, &rs_index);
|
| 734 |
|
|
|
| 735 |
|
|
if (tx_resp->flags & IEEE80211_TX_STATUS_ACK)
|
| 736 |
|
|
status = 1;
|
| 737 |
|
|
else
|
| 738 |
|
|
status = 0;
|
| 739 |
|
|
|
| 740 |
|
|
if ((tbl_type.lq_type == search_tbl->lq_type) &&
|
| 741 |
|
|
(tbl_type.antenna_type == search_tbl->antenna_type) &&
|
| 742 |
|
|
(tbl_type.is_SGI == search_tbl->is_SGI)) {
|
| 743 |
|
|
if (search_tbl->expected_tpt)
|
| 744 |
|
|
tpt = search_tbl->expected_tpt[rs_index];
|
| 745 |
|
|
else
|
| 746 |
|
|
tpt = 0;
|
| 747 |
|
|
rs_collect_tx_data(search_win,
|
| 748 |
|
|
rs_index, tpt, status);
|
| 749 |
|
|
} else if ((tbl_type.lq_type == curr_tbl->lq_type) &&
|
| 750 |
|
|
(tbl_type.antenna_type == curr_tbl->antenna_type) &&
|
| 751 |
|
|
(tbl_type.is_SGI == curr_tbl->is_SGI)) {
|
| 752 |
|
|
if (curr_tbl->expected_tpt)
|
| 753 |
|
|
tpt = curr_tbl->expected_tpt[rs_index];
|
| 754 |
|
|
else
|
| 755 |
|
|
tpt = 0;
|
| 756 |
|
|
rs_collect_tx_data(window, rs_index, tpt, status);
|
| 757 |
|
|
}
|
| 758 |
|
|
|
| 759 |
|
|
if (lq->stay_in_tbl) {
|
| 760 |
|
|
if (status)
|
| 761 |
|
|
lq->total_success++;
|
| 762 |
|
|
else
|
| 763 |
|
|
lq->total_failed++;
|
| 764 |
|
|
}
|
| 765 |
|
|
|
| 766 |
|
|
rs_rate_scale_perform(priv, dev, hdr, sta);
|
| 767 |
|
|
sta_info_put(sta);
|
| 768 |
|
|
return;
|
| 769 |
|
|
}
|
| 770 |
|
|
|
| 771 |
|
|
static u8 rs_is_ant_connected(u8 valid_antenna,
|
| 772 |
|
|
enum iwl_antenna_type antenna_type)
|
| 773 |
|
|
{
|
| 774 |
|
|
if (antenna_type == ANT_AUX)
|
| 775 |
|
|
return ((valid_antenna & 0x2) ? 1:0);
|
| 776 |
|
|
else if (antenna_type == ANT_MAIN)
|
| 777 |
|
|
return ((valid_antenna & 0x1) ? 1:0);
|
| 778 |
|
|
else if (antenna_type == ANT_BOTH) {
|
| 779 |
|
|
if ((valid_antenna & 0x3) == 0x3)
|
| 780 |
|
|
return 1;
|
| 781 |
|
|
else
|
| 782 |
|
|
return 0;
|
| 783 |
|
|
}
|
| 784 |
|
|
|
| 785 |
|
|
return 1;
|
| 786 |
|
|
}
|
| 787 |
|
|
|
| 788 |
|
|
static u8 rs_is_other_ant_connected(u8 valid_antenna,
|
| 789 |
|
|
enum iwl_antenna_type antenna_type)
|
| 790 |
|
|
{
|
| 791 |
|
|
if (antenna_type == ANT_AUX)
|
| 792 |
|
|
return (rs_is_ant_connected(valid_antenna, ANT_MAIN));
|
| 793 |
|
|
else
|
| 794 |
|
|
return (rs_is_ant_connected(valid_antenna, ANT_AUX));
|
| 795 |
|
|
|
| 796 |
|
|
return 0;
|
| 797 |
|
|
}
|
| 798 |
|
|
|
| 799 |
|
|
static void rs_set_stay_in_table(u8 is_legacy,
|
| 800 |
|
|
struct iwl_rate_scale_priv *lq_data)
|
| 801 |
|
|
{
|
| 802 |
|
|
IWL_DEBUG_HT("we are staying in the same table\n");
|
| 803 |
|
|
lq_data->stay_in_tbl = 1;
|
| 804 |
|
|
if (is_legacy) {
|
| 805 |
|
|
lq_data->table_count_limit = IWL_LEGACY_TABLE_COUNT;
|
| 806 |
|
|
lq_data->max_failure_limit = IWL_LEGACY_FAILURE_LIMIT;
|
| 807 |
|
|
lq_data->max_success_limit = IWL_LEGACY_TABLE_COUNT;
|
| 808 |
|
|
} else {
|
| 809 |
|
|
lq_data->table_count_limit = IWL_NONE_LEGACY_TABLE_COUNT;
|
| 810 |
|
|
lq_data->max_failure_limit = IWL_NONE_LEGACY_FAILURE_LIMIT;
|
| 811 |
|
|
lq_data->max_success_limit = IWL_NONE_LEGACY_SUCCESS_LIMIT;
|
| 812 |
|
|
}
|
| 813 |
|
|
lq_data->table_count = 0;
|
| 814 |
|
|
lq_data->total_failed = 0;
|
| 815 |
|
|
lq_data->total_success = 0;
|
| 816 |
|
|
}
|
| 817 |
|
|
|
| 818 |
|
|
static void rs_get_expected_tpt_table(struct iwl_rate_scale_priv *lq_data,
|
| 819 |
|
|
struct iwl_scale_tbl_info *tbl)
|
| 820 |
|
|
{
|
| 821 |
|
|
if (is_legacy(tbl->lq_type)) {
|
| 822 |
|
|
if (!is_a_band(tbl->lq_type))
|
| 823 |
|
|
tbl->expected_tpt = expected_tpt_G;
|
| 824 |
|
|
else
|
| 825 |
|
|
tbl->expected_tpt = expected_tpt_A;
|
| 826 |
|
|
} else if (is_siso(tbl->lq_type)) {
|
| 827 |
|
|
if (tbl->is_fat && !lq_data->is_dup)
|
| 828 |
|
|
if (tbl->is_SGI)
|
| 829 |
|
|
tbl->expected_tpt = expected_tpt_siso40MHzSGI;
|
| 830 |
|
|
else
|
| 831 |
|
|
tbl->expected_tpt = expected_tpt_siso40MHz;
|
| 832 |
|
|
else if (tbl->is_SGI)
|
| 833 |
|
|
tbl->expected_tpt = expected_tpt_siso20MHzSGI;
|
| 834 |
|
|
else
|
| 835 |
|
|
tbl->expected_tpt = expected_tpt_siso20MHz;
|
| 836 |
|
|
|
| 837 |
|
|
} else if (is_mimo(tbl->lq_type)) {
|
| 838 |
|
|
if (tbl->is_fat && !lq_data->is_dup)
|
| 839 |
|
|
if (tbl->is_SGI)
|
| 840 |
|
|
tbl->expected_tpt = expected_tpt_mimo40MHzSGI;
|
| 841 |
|
|
else
|
| 842 |
|
|
tbl->expected_tpt = expected_tpt_mimo40MHz;
|
| 843 |
|
|
else if (tbl->is_SGI)
|
| 844 |
|
|
tbl->expected_tpt = expected_tpt_mimo20MHzSGI;
|
| 845 |
|
|
else
|
| 846 |
|
|
tbl->expected_tpt = expected_tpt_mimo20MHz;
|
| 847 |
|
|
} else
|
| 848 |
|
|
tbl->expected_tpt = expected_tpt_G;
|
| 849 |
|
|
}
|
| 850 |
|
|
|
| 851 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 852 |
|
|
static s32 rs_get_best_rate(struct iwl_priv *priv,
|
| 853 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 854 |
|
|
struct iwl_scale_tbl_info *tbl,
|
| 855 |
|
|
u16 rate_mask, s8 index, s8 rate)
|
| 856 |
|
|
{
|
| 857 |
|
|
struct iwl_scale_tbl_info *active_tbl =
|
| 858 |
|
|
&(lq_data->lq_info[lq_data->active_tbl]);
|
| 859 |
|
|
s32 new_rate, high, low, start_hi;
|
| 860 |
|
|
s32 active_sr = active_tbl->win[index].success_ratio;
|
| 861 |
|
|
s32 *tpt_tbl = tbl->expected_tpt;
|
| 862 |
|
|
s32 active_tpt = active_tbl->expected_tpt[index];
|
| 863 |
|
|
u16 high_low;
|
| 864 |
|
|
|
| 865 |
|
|
new_rate = high = low = start_hi = IWL_RATE_INVALID;
|
| 866 |
|
|
|
| 867 |
|
|
for (; ;) {
|
| 868 |
|
|
high_low = rs_get_adjacent_rate(rate, rate_mask, tbl->lq_type);
|
| 869 |
|
|
|
| 870 |
|
|
low = high_low & 0xff;
|
| 871 |
|
|
high = (high_low >> 8) & 0xff;
|
| 872 |
|
|
|
| 873 |
|
|
if ((((100 * tpt_tbl[rate]) > lq_data->last_tpt) &&
|
| 874 |
|
|
((active_sr > IWL_RATE_DECREASE_TH) &&
|
| 875 |
|
|
(active_sr <= IWL_RATE_HIGH_TH) &&
|
| 876 |
|
|
(tpt_tbl[rate] <= active_tpt))) ||
|
| 877 |
|
|
((active_sr >= IWL_RATE_SCALE_SWITCH) &&
|
| 878 |
|
|
(tpt_tbl[rate] > active_tpt))) {
|
| 879 |
|
|
|
| 880 |
|
|
if (start_hi != IWL_RATE_INVALID) {
|
| 881 |
|
|
new_rate = start_hi;
|
| 882 |
|
|
break;
|
| 883 |
|
|
}
|
| 884 |
|
|
new_rate = rate;
|
| 885 |
|
|
if (low != IWL_RATE_INVALID)
|
| 886 |
|
|
rate = low;
|
| 887 |
|
|
else
|
| 888 |
|
|
break;
|
| 889 |
|
|
} else {
|
| 890 |
|
|
if (new_rate != IWL_RATE_INVALID)
|
| 891 |
|
|
break;
|
| 892 |
|
|
else if (high != IWL_RATE_INVALID) {
|
| 893 |
|
|
start_hi = high;
|
| 894 |
|
|
rate = high;
|
| 895 |
|
|
} else {
|
| 896 |
|
|
new_rate = rate;
|
| 897 |
|
|
break;
|
| 898 |
|
|
}
|
| 899 |
|
|
}
|
| 900 |
|
|
}
|
| 901 |
|
|
|
| 902 |
|
|
return new_rate;
|
| 903 |
|
|
}
|
| 904 |
|
|
#endif /* CONFIG_IWLWIFI_HT */
|
| 905 |
|
|
|
| 906 |
|
|
static inline u8 rs_is_both_ant_supp(u8 valid_antenna)
|
| 907 |
|
|
{
|
| 908 |
|
|
return (rs_is_ant_connected(valid_antenna, ANT_BOTH));
|
| 909 |
|
|
}
|
| 910 |
|
|
|
| 911 |
|
|
static int rs_switch_to_mimo(struct iwl_priv *priv,
|
| 912 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 913 |
|
|
struct iwl_scale_tbl_info *tbl, int index)
|
| 914 |
|
|
{
|
| 915 |
|
|
int rc = -1;
|
| 916 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 917 |
|
|
u16 rate_mask;
|
| 918 |
|
|
s32 rate;
|
| 919 |
|
|
s8 is_green = lq_data->is_green;
|
| 920 |
|
|
|
| 921 |
|
|
if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
|
| 922 |
|
|
return -1;
|
| 923 |
|
|
|
| 924 |
|
|
IWL_DEBUG_HT("LQ: try to switch to MIMO\n");
|
| 925 |
|
|
tbl->lq_type = LQ_MIMO;
|
| 926 |
|
|
rs_get_supported_rates(lq_data, NULL, tbl->lq_type,
|
| 927 |
|
|
&rate_mask);
|
| 928 |
|
|
|
| 929 |
|
|
if (priv->current_assoc_ht.tx_mimo_ps_mode == IWL_MIMO_PS_STATIC)
|
| 930 |
|
|
return -1;
|
| 931 |
|
|
|
| 932 |
|
|
if (!rs_is_both_ant_supp(lq_data->antenna))
|
| 933 |
|
|
return -1;
|
| 934 |
|
|
|
| 935 |
|
|
rc = 0;
|
| 936 |
|
|
tbl->is_dup = lq_data->is_dup;
|
| 937 |
|
|
tbl->action = 0;
|
| 938 |
|
|
if (priv->current_channel_width == IWL_CHANNEL_WIDTH_40MHZ)
|
| 939 |
|
|
tbl->is_fat = 1;
|
| 940 |
|
|
else
|
| 941 |
|
|
tbl->is_fat = 0;
|
| 942 |
|
|
|
| 943 |
|
|
if (tbl->is_fat) {
|
| 944 |
|
|
if (priv->current_assoc_ht.sgf & HT_SHORT_GI_40MHZ_ONLY)
|
| 945 |
|
|
tbl->is_SGI = 1;
|
| 946 |
|
|
else
|
| 947 |
|
|
tbl->is_SGI = 0;
|
| 948 |
|
|
} else if (priv->current_assoc_ht.sgf & HT_SHORT_GI_20MHZ_ONLY)
|
| 949 |
|
|
tbl->is_SGI = 1;
|
| 950 |
|
|
else
|
| 951 |
|
|
tbl->is_SGI = 0;
|
| 952 |
|
|
|
| 953 |
|
|
rs_get_expected_tpt_table(lq_data, tbl);
|
| 954 |
|
|
|
| 955 |
|
|
rate = rs_get_best_rate(priv, lq_data, tbl, rate_mask, index, index);
|
| 956 |
|
|
|
| 957 |
|
|
IWL_DEBUG_HT("LQ: MIMO best rate %d mask %X\n", rate, rate_mask);
|
| 958 |
|
|
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask))
|
| 959 |
|
|
return -1;
|
| 960 |
|
|
rs_mcs_from_tbl(&tbl->current_rate, tbl, rate, is_green);
|
| 961 |
|
|
|
| 962 |
|
|
IWL_DEBUG_HT("LQ: Switch to new mcs %X index is green %X\n",
|
| 963 |
|
|
tbl->current_rate.rate_n_flags, is_green);
|
| 964 |
|
|
|
| 965 |
|
|
#endif /*CONFIG_IWLWIFI_HT */
|
| 966 |
|
|
return rc;
|
| 967 |
|
|
}
|
| 968 |
|
|
|
| 969 |
|
|
static int rs_switch_to_siso(struct iwl_priv *priv,
|
| 970 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 971 |
|
|
struct iwl_scale_tbl_info *tbl, int index)
|
| 972 |
|
|
{
|
| 973 |
|
|
int rc = -1;
|
| 974 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 975 |
|
|
u16 rate_mask;
|
| 976 |
|
|
u8 is_green = lq_data->is_green;
|
| 977 |
|
|
s32 rate;
|
| 978 |
|
|
|
| 979 |
|
|
IWL_DEBUG_HT("LQ: try to switch to SISO\n");
|
| 980 |
|
|
if (!priv->is_ht_enabled || !priv->current_assoc_ht.is_ht)
|
| 981 |
|
|
return -1;
|
| 982 |
|
|
|
| 983 |
|
|
rc = 0;
|
| 984 |
|
|
tbl->is_dup = lq_data->is_dup;
|
| 985 |
|
|
tbl->lq_type = LQ_SISO;
|
| 986 |
|
|
tbl->action = 0;
|
| 987 |
|
|
rs_get_supported_rates(lq_data, NULL, tbl->lq_type,
|
| 988 |
|
|
&rate_mask);
|
| 989 |
|
|
|
| 990 |
|
|
if (priv->current_channel_width == IWL_CHANNEL_WIDTH_40MHZ)
|
| 991 |
|
|
tbl->is_fat = 1;
|
| 992 |
|
|
else
|
| 993 |
|
|
tbl->is_fat = 0;
|
| 994 |
|
|
|
| 995 |
|
|
if (tbl->is_fat) {
|
| 996 |
|
|
if (priv->current_assoc_ht.sgf & HT_SHORT_GI_40MHZ_ONLY)
|
| 997 |
|
|
tbl->is_SGI = 1;
|
| 998 |
|
|
else
|
| 999 |
|
|
tbl->is_SGI = 0;
|
| 1000 |
|
|
} else if (priv->current_assoc_ht.sgf & HT_SHORT_GI_20MHZ_ONLY)
|
| 1001 |
|
|
tbl->is_SGI = 1;
|
| 1002 |
|
|
else
|
| 1003 |
|
|
tbl->is_SGI = 0;
|
| 1004 |
|
|
|
| 1005 |
|
|
if (is_green)
|
| 1006 |
|
|
tbl->is_SGI = 0;
|
| 1007 |
|
|
|
| 1008 |
|
|
rs_get_expected_tpt_table(lq_data, tbl);
|
| 1009 |
|
|
rate = rs_get_best_rate(priv, lq_data, tbl, rate_mask, index, index);
|
| 1010 |
|
|
|
| 1011 |
|
|
IWL_DEBUG_HT("LQ: get best rate %d mask %X\n", rate, rate_mask);
|
| 1012 |
|
|
if ((rate == IWL_RATE_INVALID) || !((1 << rate) & rate_mask)) {
|
| 1013 |
|
|
IWL_DEBUG_HT("can not switch with index %d rate mask %x\n",
|
| 1014 |
|
|
rate, rate_mask);
|
| 1015 |
|
|
return -1;
|
| 1016 |
|
|
}
|
| 1017 |
|
|
rs_mcs_from_tbl(&tbl->current_rate, tbl, rate, is_green);
|
| 1018 |
|
|
IWL_DEBUG_HT("LQ: Switch to new mcs %X index is green %X\n",
|
| 1019 |
|
|
tbl->current_rate.rate_n_flags, is_green);
|
| 1020 |
|
|
|
| 1021 |
|
|
#endif /*CONFIG_IWLWIFI_HT */
|
| 1022 |
|
|
return rc;
|
| 1023 |
|
|
}
|
| 1024 |
|
|
|
| 1025 |
|
|
static int rs_move_legacy_other(struct iwl_priv *priv,
|
| 1026 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 1027 |
|
|
int index)
|
| 1028 |
|
|
{
|
| 1029 |
|
|
int rc = 0;
|
| 1030 |
|
|
struct iwl_scale_tbl_info *tbl =
|
| 1031 |
|
|
&(lq_data->lq_info[lq_data->active_tbl]);
|
| 1032 |
|
|
struct iwl_scale_tbl_info *search_tbl =
|
| 1033 |
|
|
&(lq_data->lq_info[(1 - lq_data->active_tbl)]);
|
| 1034 |
|
|
struct iwl_rate_scale_data *window = &(tbl->win[index]);
|
| 1035 |
|
|
u32 sz = (sizeof(struct iwl_scale_tbl_info) -
|
| 1036 |
|
|
(sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
|
| 1037 |
|
|
u8 start_action = tbl->action;
|
| 1038 |
|
|
|
| 1039 |
|
|
for (; ;) {
|
| 1040 |
|
|
switch (tbl->action) {
|
| 1041 |
|
|
case IWL_LEGACY_SWITCH_ANTENNA:
|
| 1042 |
|
|
IWL_DEBUG_HT("LQ Legacy switch Antenna\n");
|
| 1043 |
|
|
|
| 1044 |
|
|
search_tbl->lq_type = LQ_NONE;
|
| 1045 |
|
|
lq_data->action_counter++;
|
| 1046 |
|
|
if (window->success_ratio >= IWL_RS_GOOD_RATIO)
|
| 1047 |
|
|
break;
|
| 1048 |
|
|
if (!rs_is_other_ant_connected(lq_data->antenna,
|
| 1049 |
|
|
tbl->antenna_type))
|
| 1050 |
|
|
break;
|
| 1051 |
|
|
|
| 1052 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1053 |
|
|
|
| 1054 |
|
|
rs_toggle_antenna(&(search_tbl->current_rate),
|
| 1055 |
|
|
search_tbl);
|
| 1056 |
|
|
rs_get_expected_tpt_table(lq_data, search_tbl);
|
| 1057 |
|
|
lq_data->search_better_tbl = 1;
|
| 1058 |
|
|
goto out;
|
| 1059 |
|
|
|
| 1060 |
|
|
case IWL_LEGACY_SWITCH_SISO:
|
| 1061 |
|
|
IWL_DEBUG_HT("LQ: Legacy switch to SISO\n");
|
| 1062 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1063 |
|
|
search_tbl->lq_type = LQ_SISO;
|
| 1064 |
|
|
search_tbl->is_SGI = 0;
|
| 1065 |
|
|
search_tbl->is_fat = 0;
|
| 1066 |
|
|
rc = rs_switch_to_siso(priv, lq_data, search_tbl,
|
| 1067 |
|
|
index);
|
| 1068 |
|
|
if (!rc) {
|
| 1069 |
|
|
lq_data->search_better_tbl = 1;
|
| 1070 |
|
|
lq_data->action_counter = 0;
|
| 1071 |
|
|
}
|
| 1072 |
|
|
if (!rc)
|
| 1073 |
|
|
goto out;
|
| 1074 |
|
|
|
| 1075 |
|
|
break;
|
| 1076 |
|
|
case IWL_LEGACY_SWITCH_MIMO:
|
| 1077 |
|
|
IWL_DEBUG_HT("LQ: Legacy switch MIMO\n");
|
| 1078 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1079 |
|
|
search_tbl->lq_type = LQ_MIMO;
|
| 1080 |
|
|
search_tbl->is_SGI = 0;
|
| 1081 |
|
|
search_tbl->is_fat = 0;
|
| 1082 |
|
|
search_tbl->antenna_type = ANT_BOTH;
|
| 1083 |
|
|
rc = rs_switch_to_mimo(priv, lq_data, search_tbl,
|
| 1084 |
|
|
index);
|
| 1085 |
|
|
if (!rc) {
|
| 1086 |
|
|
lq_data->search_better_tbl = 1;
|
| 1087 |
|
|
lq_data->action_counter = 0;
|
| 1088 |
|
|
}
|
| 1089 |
|
|
if (!rc)
|
| 1090 |
|
|
goto out;
|
| 1091 |
|
|
break;
|
| 1092 |
|
|
}
|
| 1093 |
|
|
tbl->action++;
|
| 1094 |
|
|
if (tbl->action > IWL_LEGACY_SWITCH_MIMO)
|
| 1095 |
|
|
tbl->action = IWL_LEGACY_SWITCH_ANTENNA;
|
| 1096 |
|
|
|
| 1097 |
|
|
if (tbl->action == start_action)
|
| 1098 |
|
|
break;
|
| 1099 |
|
|
|
| 1100 |
|
|
}
|
| 1101 |
|
|
return 0;
|
| 1102 |
|
|
|
| 1103 |
|
|
out:
|
| 1104 |
|
|
tbl->action++;
|
| 1105 |
|
|
if (tbl->action > IWL_LEGACY_SWITCH_MIMO)
|
| 1106 |
|
|
tbl->action = IWL_LEGACY_SWITCH_ANTENNA;
|
| 1107 |
|
|
return 0;
|
| 1108 |
|
|
|
| 1109 |
|
|
}
|
| 1110 |
|
|
|
| 1111 |
|
|
static int rs_move_siso_to_other(struct iwl_priv *priv,
|
| 1112 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 1113 |
|
|
int index)
|
| 1114 |
|
|
{
|
| 1115 |
|
|
int rc = -1;
|
| 1116 |
|
|
u8 is_green = lq_data->is_green;
|
| 1117 |
|
|
struct iwl_scale_tbl_info *tbl =
|
| 1118 |
|
|
&(lq_data->lq_info[lq_data->active_tbl]);
|
| 1119 |
|
|
struct iwl_scale_tbl_info *search_tbl =
|
| 1120 |
|
|
&(lq_data->lq_info[(1 - lq_data->active_tbl)]);
|
| 1121 |
|
|
struct iwl_rate_scale_data *window = &(tbl->win[index]);
|
| 1122 |
|
|
u32 sz = (sizeof(struct iwl_scale_tbl_info) -
|
| 1123 |
|
|
(sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
|
| 1124 |
|
|
u8 start_action = tbl->action;
|
| 1125 |
|
|
|
| 1126 |
|
|
for (;;) {
|
| 1127 |
|
|
lq_data->action_counter++;
|
| 1128 |
|
|
switch (tbl->action) {
|
| 1129 |
|
|
case IWL_SISO_SWITCH_ANTENNA:
|
| 1130 |
|
|
IWL_DEBUG_HT("LQ: SISO SWITCH ANTENNA SISO\n");
|
| 1131 |
|
|
search_tbl->lq_type = LQ_NONE;
|
| 1132 |
|
|
if (window->success_ratio >= IWL_RS_GOOD_RATIO)
|
| 1133 |
|
|
break;
|
| 1134 |
|
|
if (!rs_is_other_ant_connected(lq_data->antenna,
|
| 1135 |
|
|
tbl->antenna_type))
|
| 1136 |
|
|
break;
|
| 1137 |
|
|
|
| 1138 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1139 |
|
|
search_tbl->action = IWL_SISO_SWITCH_MIMO;
|
| 1140 |
|
|
rs_toggle_antenna(&(search_tbl->current_rate),
|
| 1141 |
|
|
search_tbl);
|
| 1142 |
|
|
lq_data->search_better_tbl = 1;
|
| 1143 |
|
|
|
| 1144 |
|
|
goto out;
|
| 1145 |
|
|
|
| 1146 |
|
|
case IWL_SISO_SWITCH_MIMO:
|
| 1147 |
|
|
IWL_DEBUG_HT("LQ: SISO SWITCH TO MIMO FROM SISO\n");
|
| 1148 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1149 |
|
|
search_tbl->lq_type = LQ_MIMO;
|
| 1150 |
|
|
search_tbl->is_SGI = 0;
|
| 1151 |
|
|
search_tbl->is_fat = 0;
|
| 1152 |
|
|
search_tbl->antenna_type = ANT_BOTH;
|
| 1153 |
|
|
rc = rs_switch_to_mimo(priv, lq_data, search_tbl,
|
| 1154 |
|
|
index);
|
| 1155 |
|
|
if (!rc)
|
| 1156 |
|
|
lq_data->search_better_tbl = 1;
|
| 1157 |
|
|
|
| 1158 |
|
|
if (!rc)
|
| 1159 |
|
|
goto out;
|
| 1160 |
|
|
break;
|
| 1161 |
|
|
case IWL_SISO_SWITCH_GI:
|
| 1162 |
|
|
IWL_DEBUG_HT("LQ: SISO SWITCH TO GI\n");
|
| 1163 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1164 |
|
|
search_tbl->action = 0;
|
| 1165 |
|
|
if (search_tbl->is_SGI)
|
| 1166 |
|
|
search_tbl->is_SGI = 0;
|
| 1167 |
|
|
else if (!is_green)
|
| 1168 |
|
|
search_tbl->is_SGI = 1;
|
| 1169 |
|
|
else
|
| 1170 |
|
|
break;
|
| 1171 |
|
|
lq_data->search_better_tbl = 1;
|
| 1172 |
|
|
if ((tbl->lq_type == LQ_SISO) &&
|
| 1173 |
|
|
(tbl->is_SGI)) {
|
| 1174 |
|
|
s32 tpt = lq_data->last_tpt / 100;
|
| 1175 |
|
|
if (((!tbl->is_fat) &&
|
| 1176 |
|
|
(tpt >= expected_tpt_siso20MHz[index])) ||
|
| 1177 |
|
|
((tbl->is_fat) &&
|
| 1178 |
|
|
(tpt >= expected_tpt_siso40MHz[index])))
|
| 1179 |
|
|
lq_data->search_better_tbl = 0;
|
| 1180 |
|
|
}
|
| 1181 |
|
|
rs_get_expected_tpt_table(lq_data, search_tbl);
|
| 1182 |
|
|
rs_mcs_from_tbl(&search_tbl->current_rate,
|
| 1183 |
|
|
search_tbl, index, is_green);
|
| 1184 |
|
|
goto out;
|
| 1185 |
|
|
}
|
| 1186 |
|
|
tbl->action++;
|
| 1187 |
|
|
if (tbl->action > IWL_SISO_SWITCH_GI)
|
| 1188 |
|
|
tbl->action = IWL_SISO_SWITCH_ANTENNA;
|
| 1189 |
|
|
|
| 1190 |
|
|
if (tbl->action == start_action)
|
| 1191 |
|
|
break;
|
| 1192 |
|
|
}
|
| 1193 |
|
|
return 0;
|
| 1194 |
|
|
|
| 1195 |
|
|
out:
|
| 1196 |
|
|
tbl->action++;
|
| 1197 |
|
|
if (tbl->action > IWL_SISO_SWITCH_GI)
|
| 1198 |
|
|
tbl->action = IWL_SISO_SWITCH_ANTENNA;
|
| 1199 |
|
|
return 0;
|
| 1200 |
|
|
}
|
| 1201 |
|
|
|
| 1202 |
|
|
static int rs_move_mimo_to_other(struct iwl_priv *priv,
|
| 1203 |
|
|
struct iwl_rate_scale_priv *lq_data,
|
| 1204 |
|
|
int index)
|
| 1205 |
|
|
{
|
| 1206 |
|
|
int rc = -1;
|
| 1207 |
|
|
s8 is_green = lq_data->is_green;
|
| 1208 |
|
|
struct iwl_scale_tbl_info *tbl =
|
| 1209 |
|
|
&(lq_data->lq_info[lq_data->active_tbl]);
|
| 1210 |
|
|
struct iwl_scale_tbl_info *search_tbl =
|
| 1211 |
|
|
&(lq_data->lq_info[(1 - lq_data->active_tbl)]);
|
| 1212 |
|
|
u32 sz = (sizeof(struct iwl_scale_tbl_info) -
|
| 1213 |
|
|
(sizeof(struct iwl_rate_scale_data) * IWL_RATE_COUNT));
|
| 1214 |
|
|
u8 start_action = tbl->action;
|
| 1215 |
|
|
|
| 1216 |
|
|
for (;;) {
|
| 1217 |
|
|
lq_data->action_counter++;
|
| 1218 |
|
|
switch (tbl->action) {
|
| 1219 |
|
|
case IWL_MIMO_SWITCH_ANTENNA_A:
|
| 1220 |
|
|
case IWL_MIMO_SWITCH_ANTENNA_B:
|
| 1221 |
|
|
IWL_DEBUG_HT("LQ: MIMO SWITCH TO SISO\n");
|
| 1222 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1223 |
|
|
search_tbl->lq_type = LQ_SISO;
|
| 1224 |
|
|
search_tbl->is_SGI = 0;
|
| 1225 |
|
|
search_tbl->is_fat = 0;
|
| 1226 |
|
|
if (tbl->action == IWL_MIMO_SWITCH_ANTENNA_A)
|
| 1227 |
|
|
search_tbl->antenna_type = ANT_MAIN;
|
| 1228 |
|
|
else
|
| 1229 |
|
|
search_tbl->antenna_type = ANT_AUX;
|
| 1230 |
|
|
|
| 1231 |
|
|
rc = rs_switch_to_siso(priv, lq_data, search_tbl,
|
| 1232 |
|
|
index);
|
| 1233 |
|
|
if (!rc) {
|
| 1234 |
|
|
lq_data->search_better_tbl = 1;
|
| 1235 |
|
|
goto out;
|
| 1236 |
|
|
}
|
| 1237 |
|
|
break;
|
| 1238 |
|
|
|
| 1239 |
|
|
case IWL_MIMO_SWITCH_GI:
|
| 1240 |
|
|
IWL_DEBUG_HT("LQ: MIMO SWITCH TO GI\n");
|
| 1241 |
|
|
memcpy(search_tbl, tbl, sz);
|
| 1242 |
|
|
search_tbl->lq_type = LQ_MIMO;
|
| 1243 |
|
|
search_tbl->antenna_type = ANT_BOTH;
|
| 1244 |
|
|
search_tbl->action = 0;
|
| 1245 |
|
|
if (search_tbl->is_SGI)
|
| 1246 |
|
|
search_tbl->is_SGI = 0;
|
| 1247 |
|
|
else
|
| 1248 |
|
|
search_tbl->is_SGI = 1;
|
| 1249 |
|
|
lq_data->search_better_tbl = 1;
|
| 1250 |
|
|
if ((tbl->lq_type == LQ_MIMO) &&
|
| 1251 |
|
|
(tbl->is_SGI)) {
|
| 1252 |
|
|
s32 tpt = lq_data->last_tpt / 100;
|
| 1253 |
|
|
if (((!tbl->is_fat) &&
|
| 1254 |
|
|
(tpt >= expected_tpt_mimo20MHz[index])) ||
|
| 1255 |
|
|
((tbl->is_fat) &&
|
| 1256 |
|
|
(tpt >= expected_tpt_mimo40MHz[index])))
|
| 1257 |
|
|
lq_data->search_better_tbl = 0;
|
| 1258 |
|
|
}
|
| 1259 |
|
|
rs_get_expected_tpt_table(lq_data, search_tbl);
|
| 1260 |
|
|
rs_mcs_from_tbl(&search_tbl->current_rate,
|
| 1261 |
|
|
search_tbl, index, is_green);
|
| 1262 |
|
|
goto out;
|
| 1263 |
|
|
|
| 1264 |
|
|
}
|
| 1265 |
|
|
tbl->action++;
|
| 1266 |
|
|
if (tbl->action > IWL_MIMO_SWITCH_GI)
|
| 1267 |
|
|
tbl->action = IWL_MIMO_SWITCH_ANTENNA_A;
|
| 1268 |
|
|
|
| 1269 |
|
|
if (tbl->action == start_action)
|
| 1270 |
|
|
break;
|
| 1271 |
|
|
}
|
| 1272 |
|
|
|
| 1273 |
|
|
return 0;
|
| 1274 |
|
|
out:
|
| 1275 |
|
|
tbl->action++;
|
| 1276 |
|
|
if (tbl->action > IWL_MIMO_SWITCH_GI)
|
| 1277 |
|
|
tbl->action = IWL_MIMO_SWITCH_ANTENNA_A;
|
| 1278 |
|
|
return 0;
|
| 1279 |
|
|
|
| 1280 |
|
|
}
|
| 1281 |
|
|
|
| 1282 |
|
|
static void rs_stay_in_table(struct iwl_rate_scale_priv *lq_data)
|
| 1283 |
|
|
{
|
| 1284 |
|
|
struct iwl_scale_tbl_info *tbl;
|
| 1285 |
|
|
int i;
|
| 1286 |
|
|
int active_tbl;
|
| 1287 |
|
|
int flush_interval_passed = 0;
|
| 1288 |
|
|
|
| 1289 |
|
|
active_tbl = lq_data->active_tbl;
|
| 1290 |
|
|
|
| 1291 |
|
|
tbl = &(lq_data->lq_info[active_tbl]);
|
| 1292 |
|
|
|
| 1293 |
|
|
if (lq_data->stay_in_tbl) {
|
| 1294 |
|
|
|
| 1295 |
|
|
if (lq_data->flush_timer)
|
| 1296 |
|
|
flush_interval_passed =
|
| 1297 |
|
|
time_after(jiffies,
|
| 1298 |
|
|
(unsigned long)(lq_data->flush_timer +
|
| 1299 |
|
|
IWL_RATE_SCALE_FLUSH_INTVL));
|
| 1300 |
|
|
|
| 1301 |
|
|
flush_interval_passed = 0;
|
| 1302 |
|
|
if ((lq_data->total_failed > lq_data->max_failure_limit) ||
|
| 1303 |
|
|
(lq_data->total_success > lq_data->max_success_limit) ||
|
| 1304 |
|
|
((!lq_data->search_better_tbl) && (lq_data->flush_timer)
|
| 1305 |
|
|
&& (flush_interval_passed))) {
|
| 1306 |
|
|
IWL_DEBUG_HT("LQ: stay is expired %d %d %d\n:",
|
| 1307 |
|
|
lq_data->total_failed,
|
| 1308 |
|
|
lq_data->total_success,
|
| 1309 |
|
|
flush_interval_passed);
|
| 1310 |
|
|
lq_data->stay_in_tbl = 0;
|
| 1311 |
|
|
lq_data->total_failed = 0;
|
| 1312 |
|
|
lq_data->total_success = 0;
|
| 1313 |
|
|
lq_data->flush_timer = 0;
|
| 1314 |
|
|
} else if (lq_data->table_count > 0) {
|
| 1315 |
|
|
lq_data->table_count++;
|
| 1316 |
|
|
if (lq_data->table_count >=
|
| 1317 |
|
|
lq_data->table_count_limit) {
|
| 1318 |
|
|
lq_data->table_count = 0;
|
| 1319 |
|
|
|
| 1320 |
|
|
IWL_DEBUG_HT("LQ: stay in table clear win\n");
|
| 1321 |
|
|
for (i = 0; i < IWL_RATE_COUNT; i++)
|
| 1322 |
|
|
rs_rate_scale_clear_window(
|
| 1323 |
|
|
&(tbl->win[i]));
|
| 1324 |
|
|
}
|
| 1325 |
|
|
}
|
| 1326 |
|
|
|
| 1327 |
|
|
if (!lq_data->stay_in_tbl) {
|
| 1328 |
|
|
for (i = 0; i < IWL_RATE_COUNT; i++)
|
| 1329 |
|
|
rs_rate_scale_clear_window(&(tbl->win[i]));
|
| 1330 |
|
|
}
|
| 1331 |
|
|
}
|
| 1332 |
|
|
}
|
| 1333 |
|
|
|
| 1334 |
|
|
static void rs_rate_scale_perform(struct iwl_priv *priv,
|
| 1335 |
|
|
struct net_device *dev,
|
| 1336 |
|
|
struct ieee80211_hdr *hdr,
|
| 1337 |
|
|
struct sta_info *sta)
|
| 1338 |
|
|
{
|
| 1339 |
|
|
int low = IWL_RATE_INVALID;
|
| 1340 |
|
|
int high = IWL_RATE_INVALID;
|
| 1341 |
|
|
int index;
|
| 1342 |
|
|
int i;
|
| 1343 |
|
|
struct iwl_rate_scale_data *window = NULL;
|
| 1344 |
|
|
int current_tpt = IWL_INVALID_VALUE;
|
| 1345 |
|
|
int low_tpt = IWL_INVALID_VALUE;
|
| 1346 |
|
|
int high_tpt = IWL_INVALID_VALUE;
|
| 1347 |
|
|
u32 fail_count;
|
| 1348 |
|
|
s8 scale_action = 0;
|
| 1349 |
|
|
u16 fc, rate_mask;
|
| 1350 |
|
|
u8 update_lq = 0;
|
| 1351 |
|
|
struct iwl_rate_scale_priv *lq_data;
|
| 1352 |
|
|
struct iwl_scale_tbl_info *tbl, *tbl1;
|
| 1353 |
|
|
u16 rate_scale_index_msk = 0;
|
| 1354 |
|
|
struct iwl_rate mcs_rate;
|
| 1355 |
|
|
u8 is_green = 0;
|
| 1356 |
|
|
u8 active_tbl = 0;
|
| 1357 |
|
|
u8 done_search = 0;
|
| 1358 |
|
|
u16 high_low;
|
| 1359 |
|
|
|
| 1360 |
|
|
IWL_DEBUG_RATE("rate scale calculate new rate for skb\n");
|
| 1361 |
|
|
|
| 1362 |
|
|
fc = le16_to_cpu(hdr->frame_control);
|
| 1363 |
|
|
if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1)) {
|
| 1364 |
|
|
/* Send management frames and broadcast/multicast data using
|
| 1365 |
|
|
* lowest rate. */
|
| 1366 |
|
|
/* TODO: this could probably be improved.. */
|
| 1367 |
|
|
return;
|
| 1368 |
|
|
}
|
| 1369 |
|
|
|
| 1370 |
|
|
if (!sta || !sta->rate_ctrl_priv)
|
| 1371 |
|
|
return;
|
| 1372 |
|
|
|
| 1373 |
|
|
if (!priv->lq_mngr.lq_ready) {
|
| 1374 |
|
|
IWL_DEBUG_RATE("still rate scaling not ready\n");
|
| 1375 |
|
|
return;
|
| 1376 |
|
|
}
|
| 1377 |
|
|
lq_data = (struct iwl_rate_scale_priv *)sta->rate_ctrl_priv;
|
| 1378 |
|
|
|
| 1379 |
|
|
if (!lq_data->search_better_tbl)
|
| 1380 |
|
|
active_tbl = lq_data->active_tbl;
|
| 1381 |
|
|
else
|
| 1382 |
|
|
active_tbl = 1 - lq_data->active_tbl;
|
| 1383 |
|
|
|
| 1384 |
|
|
tbl = &(lq_data->lq_info[active_tbl]);
|
| 1385 |
|
|
is_green = lq_data->is_green;
|
| 1386 |
|
|
|
| 1387 |
|
|
index = sta->last_txrate;
|
| 1388 |
|
|
|
| 1389 |
|
|
IWL_DEBUG_RATE("Rate scale index %d for type %d\n", index,
|
| 1390 |
|
|
tbl->lq_type);
|
| 1391 |
|
|
|
| 1392 |
|
|
rs_get_supported_rates(lq_data, hdr, tbl->lq_type,
|
| 1393 |
|
|
&rate_mask);
|
| 1394 |
|
|
|
| 1395 |
|
|
IWL_DEBUG_RATE("mask 0x%04X \n", rate_mask);
|
| 1396 |
|
|
|
| 1397 |
|
|
/* mask with station rate restriction */
|
| 1398 |
|
|
if (is_legacy(tbl->lq_type)) {
|
| 1399 |
|
|
if (lq_data->phymode == (u8) MODE_IEEE80211A)
|
| 1400 |
|
|
rate_scale_index_msk = (u16) (rate_mask &
|
| 1401 |
|
|
(lq_data->supp_rates << IWL_FIRST_OFDM_RATE));
|
| 1402 |
|
|
else
|
| 1403 |
|
|
rate_scale_index_msk = (u16) (rate_mask &
|
| 1404 |
|
|
lq_data->supp_rates);
|
| 1405 |
|
|
|
| 1406 |
|
|
} else
|
| 1407 |
|
|
rate_scale_index_msk = rate_mask;
|
| 1408 |
|
|
|
| 1409 |
|
|
if (!rate_scale_index_msk)
|
| 1410 |
|
|
rate_scale_index_msk = rate_mask;
|
| 1411 |
|
|
|
| 1412 |
|
|
if (index < 0 || !((1 << index) & rate_scale_index_msk)) {
|
| 1413 |
|
|
index = IWL_INVALID_VALUE;
|
| 1414 |
|
|
update_lq = 1;
|
| 1415 |
|
|
|
| 1416 |
|
|
/* get the lowest availabe rate */
|
| 1417 |
|
|
for (i = 0; i <= IWL_RATE_COUNT; i++) {
|
| 1418 |
|
|
if ((1 << i) & rate_scale_index_msk)
|
| 1419 |
|
|
index = i;
|
| 1420 |
|
|
}
|
| 1421 |
|
|
|
| 1422 |
|
|
if (index == IWL_INVALID_VALUE) {
|
| 1423 |
|
|
IWL_WARNING("Can not find a suitable rate\n");
|
| 1424 |
|
|
return;
|
| 1425 |
|
|
}
|
| 1426 |
|
|
}
|
| 1427 |
|
|
|
| 1428 |
|
|
if (!tbl->expected_tpt)
|
| 1429 |
|
|
rs_get_expected_tpt_table(lq_data, tbl);
|
| 1430 |
|
|
|
| 1431 |
|
|
window = &(tbl->win[index]);
|
| 1432 |
|
|
|
| 1433 |
|
|
fail_count = window->counter - window->success_counter;
|
| 1434 |
|
|
if (((fail_count < IWL_RATE_MIN_FAILURE_TH) &&
|
| 1435 |
|
|
(window->success_counter < IWL_RATE_MIN_SUCCESS_TH))
|
| 1436 |
|
|
|| (tbl->expected_tpt == NULL)) {
|
| 1437 |
|
|
IWL_DEBUG_RATE("LQ: still below TH succ %d total %d "
|
| 1438 |
|
|
"for index %d\n",
|
| 1439 |
|
|
window->success_counter, window->counter, index);
|
| 1440 |
|
|
window->average_tpt = IWL_INVALID_VALUE;
|
| 1441 |
|
|
rs_stay_in_table(lq_data);
|
| 1442 |
|
|
if (update_lq) {
|
| 1443 |
|
|
rs_mcs_from_tbl(&mcs_rate, tbl, index, is_green);
|
| 1444 |
|
|
rs_fill_link_cmd(lq_data, &mcs_rate, &lq_data->lq);
|
| 1445 |
|
|
rs_send_lq_cmd(priv, &lq_data->lq, CMD_ASYNC);
|
| 1446 |
|
|
}
|
| 1447 |
|
|
goto out;
|
| 1448 |
|
|
|
| 1449 |
|
|
} else
|
| 1450 |
|
|
window->average_tpt = ((window->success_ratio *
|
| 1451 |
|
|
tbl->expected_tpt[index] + 64) / 128);
|
| 1452 |
|
|
|
| 1453 |
|
|
if (lq_data->search_better_tbl) {
|
| 1454 |
|
|
int success_limit = IWL_RATE_SCALE_SWITCH;
|
| 1455 |
|
|
|
| 1456 |
|
|
if ((window->success_ratio > success_limit) ||
|
| 1457 |
|
|
(window->average_tpt > lq_data->last_tpt)) {
|
| 1458 |
|
|
if (!is_legacy(tbl->lq_type)) {
|
| 1459 |
|
|
IWL_DEBUG_HT("LQ: we are switching to HT"
|
| 1460 |
|
|
" rate suc %d current tpt %d"
|
| 1461 |
|
|
" old tpt %d\n",
|
| 1462 |
|
|
window->success_ratio,
|
| 1463 |
|
|
window->average_tpt,
|
| 1464 |
|
|
lq_data->last_tpt);
|
| 1465 |
|
|
lq_data->enable_counter = 1;
|
| 1466 |
|
|
}
|
| 1467 |
|
|
lq_data->active_tbl = active_tbl;
|
| 1468 |
|
|
current_tpt = window->average_tpt;
|
| 1469 |
|
|
} else {
|
| 1470 |
|
|
tbl->lq_type = LQ_NONE;
|
| 1471 |
|
|
active_tbl = lq_data->active_tbl;
|
| 1472 |
|
|
tbl = &(lq_data->lq_info[active_tbl]);
|
| 1473 |
|
|
|
| 1474 |
|
|
index = iwl_rate_index_from_plcp(
|
| 1475 |
|
|
tbl->current_rate.rate_n_flags);
|
| 1476 |
|
|
|
| 1477 |
|
|
update_lq = 1;
|
| 1478 |
|
|
current_tpt = lq_data->last_tpt;
|
| 1479 |
|
|
IWL_DEBUG_HT("XXY GO BACK TO OLD TABLE\n");
|
| 1480 |
|
|
}
|
| 1481 |
|
|
lq_data->search_better_tbl = 0;
|
| 1482 |
|
|
done_search = 1;
|
| 1483 |
|
|
goto lq_update;
|
| 1484 |
|
|
}
|
| 1485 |
|
|
|
| 1486 |
|
|
high_low = rs_get_adjacent_rate(index, rate_scale_index_msk,
|
| 1487 |
|
|
tbl->lq_type);
|
| 1488 |
|
|
low = high_low & 0xff;
|
| 1489 |
|
|
high = (high_low >> 8) & 0xff;
|
| 1490 |
|
|
|
| 1491 |
|
|
current_tpt = window->average_tpt;
|
| 1492 |
|
|
|
| 1493 |
|
|
if (low != IWL_RATE_INVALID)
|
| 1494 |
|
|
low_tpt = tbl->win[low].average_tpt;
|
| 1495 |
|
|
|
| 1496 |
|
|
if (high != IWL_RATE_INVALID)
|
| 1497 |
|
|
high_tpt = tbl->win[high].average_tpt;
|
| 1498 |
|
|
|
| 1499 |
|
|
|
| 1500 |
|
|
scale_action = 1;
|
| 1501 |
|
|
|
| 1502 |
|
|
if ((window->success_ratio <= IWL_RATE_DECREASE_TH) ||
|
| 1503 |
|
|
(current_tpt == 0)) {
|
| 1504 |
|
|
IWL_DEBUG_RATE("decrease rate because of low success_ratio\n");
|
| 1505 |
|
|
scale_action = -1;
|
| 1506 |
|
|
} else if ((low_tpt == IWL_INVALID_VALUE) &&
|
| 1507 |
|
|
(high_tpt == IWL_INVALID_VALUE))
|
| 1508 |
|
|
scale_action = 1;
|
| 1509 |
|
|
else if ((low_tpt != IWL_INVALID_VALUE) &&
|
| 1510 |
|
|
(high_tpt != IWL_INVALID_VALUE) &&
|
| 1511 |
|
|
(low_tpt < current_tpt) &&
|
| 1512 |
|
|
(high_tpt < current_tpt))
|
| 1513 |
|
|
scale_action = 0;
|
| 1514 |
|
|
else {
|
| 1515 |
|
|
if (high_tpt != IWL_INVALID_VALUE) {
|
| 1516 |
|
|
if (high_tpt > current_tpt)
|
| 1517 |
|
|
scale_action = 1;
|
| 1518 |
|
|
else {
|
| 1519 |
|
|
IWL_DEBUG_RATE
|
| 1520 |
|
|
("decrease rate because of high tpt\n");
|
| 1521 |
|
|
scale_action = -1;
|
| 1522 |
|
|
}
|
| 1523 |
|
|
} else if (low_tpt != IWL_INVALID_VALUE) {
|
| 1524 |
|
|
if (low_tpt > current_tpt) {
|
| 1525 |
|
|
IWL_DEBUG_RATE
|
| 1526 |
|
|
("decrease rate because of low tpt\n");
|
| 1527 |
|
|
scale_action = -1;
|
| 1528 |
|
|
} else
|
| 1529 |
|
|
scale_action = 1;
|
| 1530 |
|
|
}
|
| 1531 |
|
|
}
|
| 1532 |
|
|
|
| 1533 |
|
|
if (scale_action == -1) {
|
| 1534 |
|
|
if ((low != IWL_RATE_INVALID) &&
|
| 1535 |
|
|
((window->success_ratio > IWL_RATE_HIGH_TH) ||
|
| 1536 |
|
|
(current_tpt > (100 * tbl->expected_tpt[low]))))
|
| 1537 |
|
|
scale_action = 0;
|
| 1538 |
|
|
} else if ((scale_action == 1) &&
|
| 1539 |
|
|
(window->success_ratio < IWL_RATE_INCREASE_TH))
|
| 1540 |
|
|
scale_action = 0;
|
| 1541 |
|
|
|
| 1542 |
|
|
switch (scale_action) {
|
| 1543 |
|
|
case -1:
|
| 1544 |
|
|
if (low != IWL_RATE_INVALID) {
|
| 1545 |
|
|
update_lq = 1;
|
| 1546 |
|
|
index = low;
|
| 1547 |
|
|
}
|
| 1548 |
|
|
break;
|
| 1549 |
|
|
case 1:
|
| 1550 |
|
|
if (high != IWL_RATE_INVALID) {
|
| 1551 |
|
|
update_lq = 1;
|
| 1552 |
|
|
index = high;
|
| 1553 |
|
|
}
|
| 1554 |
|
|
|
| 1555 |
|
|
break;
|
| 1556 |
|
|
case 0:
|
| 1557 |
|
|
default:
|
| 1558 |
|
|
break;
|
| 1559 |
|
|
}
|
| 1560 |
|
|
|
| 1561 |
|
|
IWL_DEBUG_HT("choose rate scale index %d action %d low %d "
|
| 1562 |
|
|
"high %d type %d\n",
|
| 1563 |
|
|
index, scale_action, low, high, tbl->lq_type);
|
| 1564 |
|
|
|
| 1565 |
|
|
lq_update:
|
| 1566 |
|
|
if (update_lq) {
|
| 1567 |
|
|
rs_mcs_from_tbl(&mcs_rate, tbl, index, is_green);
|
| 1568 |
|
|
rs_fill_link_cmd(lq_data, &mcs_rate, &lq_data->lq);
|
| 1569 |
|
|
rs_send_lq_cmd(priv, &lq_data->lq, CMD_ASYNC);
|
| 1570 |
|
|
}
|
| 1571 |
|
|
rs_stay_in_table(lq_data);
|
| 1572 |
|
|
|
| 1573 |
|
|
if (!update_lq && !done_search && !lq_data->stay_in_tbl) {
|
| 1574 |
|
|
lq_data->last_tpt = current_tpt;
|
| 1575 |
|
|
|
| 1576 |
|
|
if (is_legacy(tbl->lq_type))
|
| 1577 |
|
|
rs_move_legacy_other(priv, lq_data, index);
|
| 1578 |
|
|
else if (is_siso(tbl->lq_type))
|
| 1579 |
|
|
rs_move_siso_to_other(priv, lq_data, index);
|
| 1580 |
|
|
else
|
| 1581 |
|
|
rs_move_mimo_to_other(priv, lq_data, index);
|
| 1582 |
|
|
|
| 1583 |
|
|
if (lq_data->search_better_tbl) {
|
| 1584 |
|
|
tbl = &(lq_data->lq_info[(1 - lq_data->active_tbl)]);
|
| 1585 |
|
|
for (i = 0; i < IWL_RATE_COUNT; i++)
|
| 1586 |
|
|
rs_rate_scale_clear_window(&(tbl->win[i]));
|
| 1587 |
|
|
|
| 1588 |
|
|
index = iwl_rate_index_from_plcp(
|
| 1589 |
|
|
tbl->current_rate.rate_n_flags);
|
| 1590 |
|
|
|
| 1591 |
|
|
IWL_DEBUG_HT("Switch current mcs: %X index: %d\n",
|
| 1592 |
|
|
tbl->current_rate.rate_n_flags, index);
|
| 1593 |
|
|
rs_fill_link_cmd(lq_data, &tbl->current_rate,
|
| 1594 |
|
|
&lq_data->lq);
|
| 1595 |
|
|
rs_send_lq_cmd(priv, &lq_data->lq, CMD_ASYNC);
|
| 1596 |
|
|
}
|
| 1597 |
|
|
tbl1 = &(lq_data->lq_info[lq_data->active_tbl]);
|
| 1598 |
|
|
|
| 1599 |
|
|
if (is_legacy(tbl1->lq_type) &&
|
| 1600 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 1601 |
|
|
!priv->current_assoc_ht.is_ht &&
|
| 1602 |
|
|
#endif
|
| 1603 |
|
|
(lq_data->action_counter >= 1)) {
|
| 1604 |
|
|
lq_data->action_counter = 0;
|
| 1605 |
|
|
IWL_DEBUG_HT("LQ: STAY in legacy table\n");
|
| 1606 |
|
|
rs_set_stay_in_table(1, lq_data);
|
| 1607 |
|
|
}
|
| 1608 |
|
|
|
| 1609 |
|
|
if (lq_data->enable_counter &&
|
| 1610 |
|
|
(lq_data->action_counter >= IWL_ACTION_LIMIT)) {
|
| 1611 |
|
|
#ifdef CONFIG_IWLWIFI_HT_AGG
|
| 1612 |
|
|
if ((lq_data->last_tpt > TID_AGG_TPT_THREHOLD) &&
|
| 1613 |
|
|
(priv->lq_mngr.agg_ctrl.auto_agg)) {
|
| 1614 |
|
|
priv->lq_mngr.agg_ctrl.tid_retry =
|
| 1615 |
|
|
TID_ALL_SPECIFIED;
|
| 1616 |
|
|
schedule_work(&priv->agg_work);
|
| 1617 |
|
|
}
|
| 1618 |
|
|
#endif /*CONFIG_IWLWIFI_HT_AGG */
|
| 1619 |
|
|
lq_data->action_counter = 0;
|
| 1620 |
|
|
rs_set_stay_in_table(0, lq_data);
|
| 1621 |
|
|
}
|
| 1622 |
|
|
} else {
|
| 1623 |
|
|
if ((!update_lq) && (!done_search) && (!lq_data->flush_timer))
|
| 1624 |
|
|
lq_data->flush_timer = jiffies;
|
| 1625 |
|
|
}
|
| 1626 |
|
|
|
| 1627 |
|
|
out:
|
| 1628 |
|
|
rs_mcs_from_tbl(&tbl->current_rate, tbl, index, is_green);
|
| 1629 |
|
|
i = index;
|
| 1630 |
|
|
sta->last_txrate = i;
|
| 1631 |
|
|
|
| 1632 |
|
|
/* sta->txrate is an index to A mode rates which start
|
| 1633 |
|
|
* at IWL_FIRST_OFDM_RATE
|
| 1634 |
|
|
*/
|
| 1635 |
|
|
if (lq_data->phymode == (u8) MODE_IEEE80211A)
|
| 1636 |
|
|
sta->txrate = i - IWL_FIRST_OFDM_RATE;
|
| 1637 |
|
|
else
|
| 1638 |
|
|
sta->txrate = i;
|
| 1639 |
|
|
|
| 1640 |
|
|
return;
|
| 1641 |
|
|
}
|
| 1642 |
|
|
|
| 1643 |
|
|
|
| 1644 |
|
|
static void rs_initialize_lq(struct iwl_priv *priv,
|
| 1645 |
|
|
struct sta_info *sta)
|
| 1646 |
|
|
{
|
| 1647 |
|
|
int i;
|
| 1648 |
|
|
struct iwl_rate_scale_priv *lq;
|
| 1649 |
|
|
struct iwl_scale_tbl_info *tbl;
|
| 1650 |
|
|
u8 active_tbl = 0;
|
| 1651 |
|
|
int rate_idx;
|
| 1652 |
|
|
u8 use_green = rs_use_green(priv);
|
| 1653 |
|
|
struct iwl_rate mcs_rate;
|
| 1654 |
|
|
|
| 1655 |
|
|
if (!sta || !sta->rate_ctrl_priv)
|
| 1656 |
|
|
goto out;
|
| 1657 |
|
|
|
| 1658 |
|
|
lq = (struct iwl_rate_scale_priv *)sta->rate_ctrl_priv;
|
| 1659 |
|
|
i = sta->last_txrate;
|
| 1660 |
|
|
|
| 1661 |
|
|
if ((lq->lq.sta_id == 0xff) &&
|
| 1662 |
|
|
(priv->iw_mode == IEEE80211_IF_TYPE_IBSS))
|
| 1663 |
|
|
goto out;
|
| 1664 |
|
|
|
| 1665 |
|
|
if (!lq->search_better_tbl)
|
| 1666 |
|
|
active_tbl = lq->active_tbl;
|
| 1667 |
|
|
else
|
| 1668 |
|
|
active_tbl = 1 - lq->active_tbl;
|
| 1669 |
|
|
|
| 1670 |
|
|
tbl = &(lq->lq_info[active_tbl]);
|
| 1671 |
|
|
|
| 1672 |
|
|
if ((i < 0) || (i >= IWL_RATE_COUNT))
|
| 1673 |
|
|
i = 0;
|
| 1674 |
|
|
|
| 1675 |
|
|
mcs_rate.rate_n_flags = iwl_rates[i].plcp ;
|
| 1676 |
|
|
mcs_rate.rate_n_flags |= RATE_MCS_ANT_B_MSK;
|
| 1677 |
|
|
mcs_rate.rate_n_flags &= ~RATE_MCS_ANT_A_MSK;
|
| 1678 |
|
|
|
| 1679 |
|
|
if (i >= IWL_FIRST_CCK_RATE && i <= IWL_LAST_CCK_RATE)
|
| 1680 |
|
|
mcs_rate.rate_n_flags |= RATE_MCS_CCK_MSK;
|
| 1681 |
|
|
|
| 1682 |
|
|
tbl->antenna_type = ANT_AUX;
|
| 1683 |
|
|
rs_get_tbl_info_from_mcs(&mcs_rate, priv->phymode, tbl, &rate_idx);
|
| 1684 |
|
|
if (!rs_is_ant_connected(priv->valid_antenna, tbl->antenna_type))
|
| 1685 |
|
|
rs_toggle_antenna(&mcs_rate, tbl);
|
| 1686 |
|
|
|
| 1687 |
|
|
rs_mcs_from_tbl(&mcs_rate, tbl, rate_idx, use_green);
|
| 1688 |
|
|
tbl->current_rate.rate_n_flags = mcs_rate.rate_n_flags;
|
| 1689 |
|
|
rs_get_expected_tpt_table(lq, tbl);
|
| 1690 |
|
|
rs_fill_link_cmd(lq, &mcs_rate, &lq->lq);
|
| 1691 |
|
|
rs_send_lq_cmd(priv, &lq->lq, CMD_ASYNC);
|
| 1692 |
|
|
out:
|
| 1693 |
|
|
return;
|
| 1694 |
|
|
}
|
| 1695 |
|
|
|
| 1696 |
|
|
static struct ieee80211_rate *rs_get_lowest_rate(struct ieee80211_local
|
| 1697 |
|
|
*local)
|
| 1698 |
|
|
{
|
| 1699 |
|
|
struct ieee80211_hw_mode *mode = local->oper_hw_mode;
|
| 1700 |
|
|
int i;
|
| 1701 |
|
|
|
| 1702 |
|
|
for (i = 0; i < mode->num_rates; i++) {
|
| 1703 |
|
|
struct ieee80211_rate *rate = &mode->rates[i];
|
| 1704 |
|
|
|
| 1705 |
|
|
if (rate->flags & IEEE80211_RATE_SUPPORTED)
|
| 1706 |
|
|
return rate;
|
| 1707 |
|
|
}
|
| 1708 |
|
|
|
| 1709 |
|
|
return &mode->rates[0];
|
| 1710 |
|
|
}
|
| 1711 |
|
|
|
| 1712 |
|
|
static struct ieee80211_rate *rs_get_rate(void *priv_rate,
|
| 1713 |
|
|
struct net_device *dev,
|
| 1714 |
|
|
struct sk_buff *skb,
|
| 1715 |
|
|
struct rate_control_extra
|
| 1716 |
|
|
*extra)
|
| 1717 |
|
|
{
|
| 1718 |
|
|
|
| 1719 |
|
|
int i;
|
| 1720 |
|
|
struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
|
| 1721 |
|
|
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
|
| 1722 |
|
|
struct sta_info *sta;
|
| 1723 |
|
|
u16 fc;
|
| 1724 |
|
|
struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
|
| 1725 |
|
|
struct iwl_rate_scale_priv *lq;
|
| 1726 |
|
|
|
| 1727 |
|
|
IWL_DEBUG_RATE_LIMIT("rate scale calculate new rate for skb\n");
|
| 1728 |
|
|
|
| 1729 |
|
|
memset(extra, 0, sizeof(*extra));
|
| 1730 |
|
|
|
| 1731 |
|
|
fc = le16_to_cpu(hdr->frame_control);
|
| 1732 |
|
|
if (!ieee80211_is_data(fc) || is_multicast_ether_addr(hdr->addr1)) {
|
| 1733 |
|
|
/* Send management frames and broadcast/multicast data using
|
| 1734 |
|
|
* lowest rate. */
|
| 1735 |
|
|
/* TODO: this could probably be improved.. */
|
| 1736 |
|
|
return rs_get_lowest_rate(local);
|
| 1737 |
|
|
}
|
| 1738 |
|
|
|
| 1739 |
|
|
sta = sta_info_get(local, hdr->addr1);
|
| 1740 |
|
|
|
| 1741 |
|
|
if (!sta || !sta->rate_ctrl_priv) {
|
| 1742 |
|
|
if (sta)
|
| 1743 |
|
|
sta_info_put(sta);
|
| 1744 |
|
|
return rs_get_lowest_rate(local);
|
| 1745 |
|
|
}
|
| 1746 |
|
|
|
| 1747 |
|
|
lq = (struct iwl_rate_scale_priv *)sta->rate_ctrl_priv;
|
| 1748 |
|
|
i = sta->last_txrate;
|
| 1749 |
|
|
|
| 1750 |
|
|
if ((priv->iw_mode == IEEE80211_IF_TYPE_IBSS) && !lq->ibss_sta_added) {
|
| 1751 |
|
|
u8 sta_id = iwl_hw_find_station(priv, hdr->addr1);
|
| 1752 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1753 |
|
|
|
| 1754 |
|
|
if (sta_id == IWL_INVALID_STATION) {
|
| 1755 |
|
|
IWL_DEBUG_RATE("LQ: ADD station %s\n",
|
| 1756 |
|
|
print_mac(mac, hdr->addr1));
|
| 1757 |
|
|
sta_id = iwl_add_station(priv,
|
| 1758 |
|
|
hdr->addr1, 0, CMD_ASYNC);
|
| 1759 |
|
|
}
|
| 1760 |
|
|
if ((sta_id != IWL_INVALID_STATION)) {
|
| 1761 |
|
|
lq->lq.sta_id = sta_id;
|
| 1762 |
|
|
lq->lq.rs_table[0].rate_n_flags = 0;
|
| 1763 |
|
|
lq->ibss_sta_added = 1;
|
| 1764 |
|
|
rs_initialize_lq(priv, sta);
|
| 1765 |
|
|
}
|
| 1766 |
|
|
if (!lq->ibss_sta_added)
|
| 1767 |
|
|
goto done;
|
| 1768 |
|
|
}
|
| 1769 |
|
|
|
| 1770 |
|
|
done:
|
| 1771 |
|
|
sta_info_put(sta);
|
| 1772 |
|
|
if ((i < 0) || (i > IWL_RATE_COUNT))
|
| 1773 |
|
|
return rs_get_lowest_rate(local);
|
| 1774 |
|
|
|
| 1775 |
|
|
return &priv->ieee_rates[i];
|
| 1776 |
|
|
}
|
| 1777 |
|
|
|
| 1778 |
|
|
static void *rs_alloc_sta(void *priv, gfp_t gfp)
|
| 1779 |
|
|
{
|
| 1780 |
|
|
struct iwl_rate_scale_priv *crl;
|
| 1781 |
|
|
int i, j;
|
| 1782 |
|
|
|
| 1783 |
|
|
IWL_DEBUG_RATE("create station rate scale window\n");
|
| 1784 |
|
|
|
| 1785 |
|
|
crl = kzalloc(sizeof(struct iwl_rate_scale_priv), gfp);
|
| 1786 |
|
|
|
| 1787 |
|
|
if (crl == NULL)
|
| 1788 |
|
|
return NULL;
|
| 1789 |
|
|
crl->lq.sta_id = 0xff;
|
| 1790 |
|
|
|
| 1791 |
|
|
|
| 1792 |
|
|
for (j = 0; j < LQ_SIZE; j++)
|
| 1793 |
|
|
for (i = 0; i < IWL_RATE_COUNT; i++)
|
| 1794 |
|
|
rs_rate_scale_clear_window(&(crl->lq_info[j].win[i]));
|
| 1795 |
|
|
|
| 1796 |
|
|
return crl;
|
| 1797 |
|
|
}
|
| 1798 |
|
|
|
| 1799 |
|
|
static void rs_rate_init(void *priv_rate, void *priv_sta,
|
| 1800 |
|
|
struct ieee80211_local *local,
|
| 1801 |
|
|
struct sta_info *sta)
|
| 1802 |
|
|
{
|
| 1803 |
|
|
int i, j;
|
| 1804 |
|
|
struct ieee80211_hw_mode *mode = local->oper_hw_mode;
|
| 1805 |
|
|
struct iwl_priv *priv = (struct iwl_priv *)priv_rate;
|
| 1806 |
|
|
struct iwl_rate_scale_priv *crl = priv_sta;
|
| 1807 |
|
|
|
| 1808 |
|
|
crl->flush_timer = 0;
|
| 1809 |
|
|
crl->supp_rates = sta->supp_rates;
|
| 1810 |
|
|
sta->txrate = 3;
|
| 1811 |
|
|
for (j = 0; j < LQ_SIZE; j++)
|
| 1812 |
|
|
for (i = 0; i < IWL_RATE_COUNT; i++)
|
| 1813 |
|
|
rs_rate_scale_clear_window(&(crl->lq_info[j].win[i]));
|
| 1814 |
|
|
|
| 1815 |
|
|
IWL_DEBUG_RATE("rate scale global init\n");
|
| 1816 |
|
|
/* TODO: what is a good starting rate for STA? About middle? Maybe not
|
| 1817 |
|
|
* the lowest or the highest rate.. Could consider using RSSI from
|
| 1818 |
|
|
* previous packets? Need to have IEEE 802.1X auth succeed immediately
|
| 1819 |
|
|
* after assoc.. */
|
| 1820 |
|
|
|
| 1821 |
|
|
crl->ibss_sta_added = 0;
|
| 1822 |
|
|
if (priv->iw_mode == IEEE80211_IF_TYPE_AP) {
|
| 1823 |
|
|
u8 sta_id = iwl_hw_find_station(priv, sta->addr);
|
| 1824 |
|
|
DECLARE_MAC_BUF(mac);
|
| 1825 |
|
|
|
| 1826 |
|
|
/* for IBSS the call are from tasklet */
|
| 1827 |
|
|
IWL_DEBUG_HT("LQ: ADD station %s\n",
|
| 1828 |
|
|
print_mac(mac, sta->addr));
|
| 1829 |
|
|
|
| 1830 |
|
|
if (sta_id == IWL_INVALID_STATION) {
|
| 1831 |
|
|
IWL_DEBUG_RATE("LQ: ADD station %s\n",
|
| 1832 |
|
|
print_mac(mac, sta->addr));
|
| 1833 |
|
|
sta_id = iwl_add_station(priv,
|
| 1834 |
|
|
sta->addr, 0, CMD_ASYNC);
|
| 1835 |
|
|
}
|
| 1836 |
|
|
if ((sta_id != IWL_INVALID_STATION)) {
|
| 1837 |
|
|
crl->lq.sta_id = sta_id;
|
| 1838 |
|
|
crl->lq.rs_table[0].rate_n_flags = 0;
|
| 1839 |
|
|
}
|
| 1840 |
|
|
/* FIXME: this is w/a remove it later */
|
| 1841 |
|
|
priv->assoc_station_added = 1;
|
| 1842 |
|
|
}
|
| 1843 |
|
|
|
| 1844 |
|
|
for (i = 0; i < mode->num_rates; i++) {
|
| 1845 |
|
|
if ((sta->supp_rates & BIT(i)) &&
|
| 1846 |
|
|
(mode->rates[i].flags & IEEE80211_RATE_SUPPORTED))
|
| 1847 |
|
|
sta->txrate = i;
|
| 1848 |
|
|
}
|
| 1849 |
|
|
sta->last_txrate = sta->txrate;
|
| 1850 |
|
|
/* For MODE_IEEE80211A mode cck rate are at end
|
| 1851 |
|
|
* rate table
|
| 1852 |
|
|
*/
|
| 1853 |
|
|
if (local->hw.conf.phymode == MODE_IEEE80211A)
|
| 1854 |
|
|
sta->last_txrate += IWL_FIRST_OFDM_RATE;
|
| 1855 |
|
|
|
| 1856 |
|
|
crl->is_dup = priv->is_dup;
|
| 1857 |
|
|
crl->valid_antenna = priv->valid_antenna;
|
| 1858 |
|
|
crl->antenna = priv->antenna;
|
| 1859 |
|
|
crl->is_green = rs_use_green(priv);
|
| 1860 |
|
|
crl->active_rate = priv->active_rate;
|
| 1861 |
|
|
crl->active_rate &= ~(0x1000);
|
| 1862 |
|
|
crl->active_rate_basic = priv->active_rate_basic;
|
| 1863 |
|
|
crl->phymode = priv->phymode;
|
| 1864 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 1865 |
|
|
crl->active_siso_rate = (priv->current_assoc_ht.supp_rates[0] << 1);
|
| 1866 |
|
|
crl->active_siso_rate |= (priv->current_assoc_ht.supp_rates[0] & 0x1);
|
| 1867 |
|
|
crl->active_siso_rate &= ~((u16)0x2);
|
| 1868 |
|
|
crl->active_siso_rate = crl->active_siso_rate << IWL_FIRST_OFDM_RATE;
|
| 1869 |
|
|
|
| 1870 |
|
|
crl->active_mimo_rate = (priv->current_assoc_ht.supp_rates[1] << 1);
|
| 1871 |
|
|
crl->active_mimo_rate |= (priv->current_assoc_ht.supp_rates[1] & 0x1);
|
| 1872 |
|
|
crl->active_mimo_rate &= ~((u16)0x2);
|
| 1873 |
|
|
crl->active_mimo_rate = crl->active_mimo_rate << IWL_FIRST_OFDM_RATE;
|
| 1874 |
|
|
IWL_DEBUG_HT("MIMO RATE 0x%X SISO MASK 0x%X\n", crl->active_siso_rate,
|
| 1875 |
|
|
crl->active_mimo_rate);
|
| 1876 |
|
|
#endif /*CONFIG_IWLWIFI_HT*/
|
| 1877 |
|
|
#ifdef CONFIG_MAC80211_DEBUGFS
|
| 1878 |
|
|
crl->drv = priv;
|
| 1879 |
|
|
#endif
|
| 1880 |
|
|
|
| 1881 |
|
|
if (priv->assoc_station_added)
|
| 1882 |
|
|
priv->lq_mngr.lq_ready = 1;
|
| 1883 |
|
|
|
| 1884 |
|
|
rs_initialize_lq(priv, sta);
|
| 1885 |
|
|
}
|
| 1886 |
|
|
|
| 1887 |
|
|
static void rs_fill_link_cmd(struct iwl_rate_scale_priv *lq_data,
|
| 1888 |
|
|
struct iwl_rate *tx_mcs,
|
| 1889 |
|
|
struct iwl_link_quality_cmd *lq_cmd)
|
| 1890 |
|
|
{
|
| 1891 |
|
|
int index = 0;
|
| 1892 |
|
|
int rate_idx;
|
| 1893 |
|
|
int repeat_rate = 0;
|
| 1894 |
|
|
u8 ant_toggle_count = 0;
|
| 1895 |
|
|
u8 use_ht_possible = 1;
|
| 1896 |
|
|
struct iwl_rate new_rate;
|
| 1897 |
|
|
struct iwl_scale_tbl_info tbl_type = { 0 };
|
| 1898 |
|
|
|
| 1899 |
|
|
rs_dbgfs_set_mcs(lq_data, tx_mcs, index);
|
| 1900 |
|
|
|
| 1901 |
|
|
rs_get_tbl_info_from_mcs(tx_mcs, lq_data->phymode,
|
| 1902 |
|
|
&tbl_type, &rate_idx);
|
| 1903 |
|
|
|
| 1904 |
|
|
if (is_legacy(tbl_type.lq_type)) {
|
| 1905 |
|
|
ant_toggle_count = 1;
|
| 1906 |
|
|
repeat_rate = IWL_NUMBER_TRY;
|
| 1907 |
|
|
} else
|
| 1908 |
|
|
repeat_rate = IWL_HT_NUMBER_TRY;
|
| 1909 |
|
|
|
| 1910 |
|
|
lq_cmd->general_params.mimo_delimiter =
|
| 1911 |
|
|
is_mimo(tbl_type.lq_type) ? 1 : 0;
|
| 1912 |
|
|
lq_cmd->rs_table[index].rate_n_flags =
|
| 1913 |
|
|
cpu_to_le32(tx_mcs->rate_n_flags);
|
| 1914 |
|
|
new_rate.rate_n_flags = tx_mcs->rate_n_flags;
|
| 1915 |
|
|
|
| 1916 |
|
|
if (is_mimo(tbl_type.lq_type) || (tbl_type.antenna_type == ANT_MAIN))
|
| 1917 |
|
|
lq_cmd->general_params.single_stream_ant_msk = 1;
|
| 1918 |
|
|
else
|
| 1919 |
|
|
lq_cmd->general_params.single_stream_ant_msk = 2;
|
| 1920 |
|
|
|
| 1921 |
|
|
index++;
|
| 1922 |
|
|
repeat_rate--;
|
| 1923 |
|
|
|
| 1924 |
|
|
while (index < LINK_QUAL_MAX_RETRY_NUM) {
|
| 1925 |
|
|
while (repeat_rate > 0 && (index < LINK_QUAL_MAX_RETRY_NUM)) {
|
| 1926 |
|
|
if (is_legacy(tbl_type.lq_type)) {
|
| 1927 |
|
|
if (ant_toggle_count <
|
| 1928 |
|
|
NUM_TRY_BEFORE_ANTENNA_TOGGLE)
|
| 1929 |
|
|
ant_toggle_count++;
|
| 1930 |
|
|
else {
|
| 1931 |
|
|
rs_toggle_antenna(&new_rate, &tbl_type);
|
| 1932 |
|
|
ant_toggle_count = 1;
|
| 1933 |
|
|
}
|
| 1934 |
|
|
}
|
| 1935 |
|
|
|
| 1936 |
|
|
rs_dbgfs_set_mcs(lq_data, &new_rate, index);
|
| 1937 |
|
|
lq_cmd->rs_table[index].rate_n_flags =
|
| 1938 |
|
|
cpu_to_le32(new_rate.rate_n_flags);
|
| 1939 |
|
|
repeat_rate--;
|
| 1940 |
|
|
index++;
|
| 1941 |
|
|
}
|
| 1942 |
|
|
|
| 1943 |
|
|
rs_get_tbl_info_from_mcs(&new_rate, lq_data->phymode, &tbl_type,
|
| 1944 |
|
|
&rate_idx);
|
| 1945 |
|
|
|
| 1946 |
|
|
if (is_mimo(tbl_type.lq_type))
|
| 1947 |
|
|
lq_cmd->general_params.mimo_delimiter = index;
|
| 1948 |
|
|
|
| 1949 |
|
|
rs_get_lower_rate(lq_data, &tbl_type, rate_idx,
|
| 1950 |
|
|
use_ht_possible, &new_rate);
|
| 1951 |
|
|
|
| 1952 |
|
|
if (is_legacy(tbl_type.lq_type)) {
|
| 1953 |
|
|
if (ant_toggle_count < NUM_TRY_BEFORE_ANTENNA_TOGGLE)
|
| 1954 |
|
|
ant_toggle_count++;
|
| 1955 |
|
|
else {
|
| 1956 |
|
|
rs_toggle_antenna(&new_rate, &tbl_type);
|
| 1957 |
|
|
ant_toggle_count = 1;
|
| 1958 |
|
|
}
|
| 1959 |
|
|
repeat_rate = IWL_NUMBER_TRY;
|
| 1960 |
|
|
} else
|
| 1961 |
|
|
repeat_rate = IWL_HT_NUMBER_TRY;
|
| 1962 |
|
|
|
| 1963 |
|
|
use_ht_possible = 0;
|
| 1964 |
|
|
|
| 1965 |
|
|
rs_dbgfs_set_mcs(lq_data, &new_rate, index);
|
| 1966 |
|
|
lq_cmd->rs_table[index].rate_n_flags =
|
| 1967 |
|
|
cpu_to_le32(new_rate.rate_n_flags);
|
| 1968 |
|
|
|
| 1969 |
|
|
index++;
|
| 1970 |
|
|
repeat_rate--;
|
| 1971 |
|
|
}
|
| 1972 |
|
|
|
| 1973 |
|
|
lq_cmd->general_params.dual_stream_ant_msk = 3;
|
| 1974 |
|
|
lq_cmd->agg_params.agg_dis_start_th = 3;
|
| 1975 |
|
|
lq_cmd->agg_params.agg_time_limit = cpu_to_le16(4000);
|
| 1976 |
|
|
}
|
| 1977 |
|
|
|
| 1978 |
|
|
static void *rs_alloc(struct ieee80211_local *local)
|
| 1979 |
|
|
{
|
| 1980 |
|
|
return local->hw.priv;
|
| 1981 |
|
|
}
|
| 1982 |
|
|
/* rate scale requires free function to be implemented */
|
| 1983 |
|
|
static void rs_free(void *priv_rate)
|
| 1984 |
|
|
{
|
| 1985 |
|
|
return;
|
| 1986 |
|
|
}
|
| 1987 |
|
|
|
| 1988 |
|
|
static void rs_clear(void *priv_rate)
|
| 1989 |
|
|
{
|
| 1990 |
|
|
struct iwl_priv *priv = (struct iwl_priv *) priv_rate;
|
| 1991 |
|
|
|
| 1992 |
|
|
IWL_DEBUG_RATE("enter\n");
|
| 1993 |
|
|
|
| 1994 |
|
|
priv->lq_mngr.lq_ready = 0;
|
| 1995 |
|
|
#ifdef CONFIG_IWLWIFI_HT
|
| 1996 |
|
|
#ifdef CONFIG_IWLWIFI_HT_AGG
|
| 1997 |
|
|
if (priv->lq_mngr.agg_ctrl.granted_ba)
|
| 1998 |
|
|
iwl4965_turn_off_agg(priv, TID_ALL_SPECIFIED);
|
| 1999 |
|
|
#endif /*CONFIG_IWLWIFI_HT_AGG */
|
| 2000 |
|
|
#endif /* CONFIG_IWLWIFI_HT */
|
| 2001 |
|
|
|
| 2002 |
|
|
IWL_DEBUG_RATE("leave\n");
|
| 2003 |
|
|
}
|
| 2004 |
|
|
|
| 2005 |
|
|
static void rs_free_sta(void *priv, void *priv_sta)
|
| 2006 |
|
|
{
|
| 2007 |
|
|
struct iwl_rate_scale_priv *rs_priv = priv_sta;
|
| 2008 |
|
|
|
| 2009 |
|
|
IWL_DEBUG_RATE("enter\n");
|
| 2010 |
|
|
kfree(rs_priv);
|
| 2011 |
|
|
IWL_DEBUG_RATE("leave\n");
|
| 2012 |
|
|
}
|
| 2013 |
|
|
|
| 2014 |
|
|
|
| 2015 |
|
|
#ifdef CONFIG_MAC80211_DEBUGFS
|
| 2016 |
|
|
static int open_file_generic(struct inode *inode, struct file *file)
|
| 2017 |
|
|
{
|
| 2018 |
|
|
file->private_data = inode->i_private;
|
| 2019 |
|
|
return 0;
|
| 2020 |
|
|
}
|
| 2021 |
|
|
static void rs_dbgfs_set_mcs(struct iwl_rate_scale_priv *rs_priv,
|
| 2022 |
|
|
struct iwl_rate *mcs, int index)
|
| 2023 |
|
|
{
|
| 2024 |
|
|
u32 base_rate;
|
| 2025 |
|
|
|
| 2026 |
|
|
if (rs_priv->phymode == (u8) MODE_IEEE80211A)
|
| 2027 |
|
|
base_rate = 0x800D;
|
| 2028 |
|
|
else
|
| 2029 |
|
|
base_rate = 0x820A;
|
| 2030 |
|
|
|
| 2031 |
|
|
if (rs_priv->dbg_fixed.rate_n_flags) {
|
| 2032 |
|
|
if (index < 12)
|
| 2033 |
|
|
mcs->rate_n_flags = rs_priv->dbg_fixed.rate_n_flags;
|
| 2034 |
|
|
else
|
| 2035 |
|
|
mcs->rate_n_flags = base_rate;
|
| 2036 |
|
|
IWL_DEBUG_RATE("Fixed rate ON\n");
|
| 2037 |
|
|
return;
|
| 2038 |
|
|
}
|
| 2039 |
|
|
|
| 2040 |
|
|
IWL_DEBUG_RATE("Fixed rate OFF\n");
|
| 2041 |
|
|
}
|
| 2042 |
|
|
|
| 2043 |
|
|
static ssize_t rs_sta_dbgfs_scale_table_write(struct file *file,
|
| 2044 |
|
|
const char __user *user_buf, size_t count, loff_t *ppos)
|
| 2045 |
|
|
{
|
| 2046 |
|
|
struct iwl_rate_scale_priv *rs_priv = file->private_data;
|
| 2047 |
|
|
char buf[64];
|
| 2048 |
|
|
int buf_size;
|
| 2049 |
|
|
u32 parsed_rate;
|
| 2050 |
|
|
|
| 2051 |
|
|
memset(buf, 0, sizeof(buf));
|
| 2052 |
|
|
buf_size = min(count, sizeof(buf) - 1);
|
| 2053 |
|
|
if (copy_from_user(buf, user_buf, buf_size))
|
| 2054 |
|
|
return -EFAULT;
|
| 2055 |
|
|
|
| 2056 |
|
|
if (sscanf(buf, "%x", &parsed_rate) == 1)
|
| 2057 |
|
|
rs_priv->dbg_fixed.rate_n_flags = parsed_rate;
|
| 2058 |
|
|
else
|
| 2059 |
|
|
rs_priv->dbg_fixed.rate_n_flags = 0;
|
| 2060 |
|
|
|
| 2061 |
|
|
rs_priv->active_rate = 0x0FFF;
|
| 2062 |
|
|
rs_priv->active_siso_rate = 0x1FD0;
|
| 2063 |
|
|
rs_priv->active_mimo_rate = 0x1FD0;
|
| 2064 |
|
|
|
| 2065 |
|
|
IWL_DEBUG_RATE("sta_id %d rate 0x%X\n",
|
| 2066 |
|
|
rs_priv->lq.sta_id, rs_priv->dbg_fixed.rate_n_flags);
|
| 2067 |
|
|
|
| 2068 |
|
|
if (rs_priv->dbg_fixed.rate_n_flags) {
|
| 2069 |
|
|
rs_fill_link_cmd(rs_priv, &rs_priv->dbg_fixed, &rs_priv->lq);
|
| 2070 |
|
|
rs_send_lq_cmd(rs_priv->drv, &rs_priv->lq, CMD_ASYNC);
|
| 2071 |
|
|
}
|
| 2072 |
|
|
|
| 2073 |
|
|
return count;
|
| 2074 |
|
|
}
|
| 2075 |
|
|
|
| 2076 |
|
|
static ssize_t rs_sta_dbgfs_scale_table_read(struct file *file,
|
| 2077 |
|
|
char __user *user_buf, size_t count, loff_t *ppos)
|
| 2078 |
|
|
{
|
| 2079 |
|
|
char buff[1024];
|
| 2080 |
|
|
int desc = 0;
|
| 2081 |
|
|
int i = 0;
|
| 2082 |
|
|
|
| 2083 |
|
|
struct iwl_rate_scale_priv *rs_priv = file->private_data;
|
| 2084 |
|
|
|
| 2085 |
|
|
desc += sprintf(buff+desc, "sta_id %d\n", rs_priv->lq.sta_id);
|
| 2086 |
|
|
desc += sprintf(buff+desc, "failed=%d success=%d rate=0%X\n",
|
| 2087 |
|
|
rs_priv->total_failed, rs_priv->total_success,
|
| 2088 |
|
|
rs_priv->active_rate);
|
| 2089 |
|
|
desc += sprintf(buff+desc, "fixed rate 0x%X\n",
|
| 2090 |
|
|
rs_priv->dbg_fixed.rate_n_flags);
|
| 2091 |
|
|
desc += sprintf(buff+desc, "general:"
|
| 2092 |
|
|
"flags=0x%X mimo-d=%d s-ant0x%x d-ant=0x%x\n",
|
| 2093 |
|
|
rs_priv->lq.general_params.flags,
|
| 2094 |
|
|
rs_priv->lq.general_params.mimo_delimiter,
|
| 2095 |
|
|
rs_priv->lq.general_params.single_stream_ant_msk,
|
| 2096 |
|
|
rs_priv->lq.general_params.dual_stream_ant_msk);
|
| 2097 |
|
|
|
| 2098 |
|
|
desc += sprintf(buff+desc, "agg:"
|
| 2099 |
|
|
"time_limit=%d dist_start_th=%d frame_cnt_limit=%d\n",
|
| 2100 |
|
|
le16_to_cpu(rs_priv->lq.agg_params.agg_time_limit),
|
| 2101 |
|
|
rs_priv->lq.agg_params.agg_dis_start_th,
|
| 2102 |
|
|
rs_priv->lq.agg_params.agg_frame_cnt_limit);
|
| 2103 |
|
|
|
| 2104 |
|
|
desc += sprintf(buff+desc,
|
| 2105 |
|
|
"Start idx [0]=0x%x [1]=0x%x [2]=0x%x [3]=0x%x\n",
|
| 2106 |
|
|
rs_priv->lq.general_params.start_rate_index[0],
|
| 2107 |
|
|
rs_priv->lq.general_params.start_rate_index[1],
|
| 2108 |
|
|
rs_priv->lq.general_params.start_rate_index[2],
|
| 2109 |
|
|
rs_priv->lq.general_params.start_rate_index[3]);
|
| 2110 |
|
|
|
| 2111 |
|
|
|
| 2112 |
|
|
for (i = 0; i < LINK_QUAL_MAX_RETRY_NUM; i++)
|
| 2113 |
|
|
desc += sprintf(buff+desc, " rate[%d] 0x%X\n",
|
| 2114 |
|
|
i, le32_to_cpu(rs_priv->lq.rs_table[i].rate_n_flags));
|
| 2115 |
|
|
|
| 2116 |
|
|
return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
|
| 2117 |
|
|
}
|
| 2118 |
|
|
|
| 2119 |
|
|
static const struct file_operations rs_sta_dbgfs_scale_table_ops = {
|
| 2120 |
|
|
.write = rs_sta_dbgfs_scale_table_write,
|
| 2121 |
|
|
.read = rs_sta_dbgfs_scale_table_read,
|
| 2122 |
|
|
.open = open_file_generic,
|
| 2123 |
|
|
};
|
| 2124 |
|
|
static ssize_t rs_sta_dbgfs_stats_table_read(struct file *file,
|
| 2125 |
|
|
char __user *user_buf, size_t count, loff_t *ppos)
|
| 2126 |
|
|
{
|
| 2127 |
|
|
char buff[1024];
|
| 2128 |
|
|
int desc = 0;
|
| 2129 |
|
|
int i, j;
|
| 2130 |
|
|
|
| 2131 |
|
|
struct iwl_rate_scale_priv *rs_priv = file->private_data;
|
| 2132 |
|
|
for (i = 0; i < LQ_SIZE; i++) {
|
| 2133 |
|
|
desc += sprintf(buff+desc, "%s type=%d SGI=%d FAT=%d DUP=%d\n"
|
| 2134 |
|
|
"rate=0x%X\n",
|
| 2135 |
|
|
rs_priv->active_tbl == i?"*":"x",
|
| 2136 |
|
|
rs_priv->lq_info[i].lq_type,
|
| 2137 |
|
|
rs_priv->lq_info[i].is_SGI,
|
| 2138 |
|
|
rs_priv->lq_info[i].is_fat,
|
| 2139 |
|
|
rs_priv->lq_info[i].is_dup,
|
| 2140 |
|
|
rs_priv->lq_info[i].current_rate.rate_n_flags);
|
| 2141 |
|
|
for (j = 0; j < IWL_RATE_COUNT; j++) {
|
| 2142 |
|
|
desc += sprintf(buff+desc,
|
| 2143 |
|
|
"counter=%d success=%d %%=%d\n",
|
| 2144 |
|
|
rs_priv->lq_info[i].win[j].counter,
|
| 2145 |
|
|
rs_priv->lq_info[i].win[j].success_counter,
|
| 2146 |
|
|
rs_priv->lq_info[i].win[j].success_ratio);
|
| 2147 |
|
|
}
|
| 2148 |
|
|
}
|
| 2149 |
|
|
return simple_read_from_buffer(user_buf, count, ppos, buff, desc);
|
| 2150 |
|
|
}
|
| 2151 |
|
|
|
| 2152 |
|
|
static const struct file_operations rs_sta_dbgfs_stats_table_ops = {
|
| 2153 |
|
|
.read = rs_sta_dbgfs_stats_table_read,
|
| 2154 |
|
|
.open = open_file_generic,
|
| 2155 |
|
|
};
|
| 2156 |
|
|
|
| 2157 |
|
|
static void rs_add_debugfs(void *priv, void *priv_sta,
|
| 2158 |
|
|
struct dentry *dir)
|
| 2159 |
|
|
{
|
| 2160 |
|
|
struct iwl_rate_scale_priv *rs_priv = priv_sta;
|
| 2161 |
|
|
rs_priv->rs_sta_dbgfs_scale_table_file =
|
| 2162 |
|
|
debugfs_create_file("rate_scale_table", 0600, dir,
|
| 2163 |
|
|
rs_priv, &rs_sta_dbgfs_scale_table_ops);
|
| 2164 |
|
|
rs_priv->rs_sta_dbgfs_stats_table_file =
|
| 2165 |
|
|
debugfs_create_file("rate_stats_table", 0600, dir,
|
| 2166 |
|
|
rs_priv, &rs_sta_dbgfs_stats_table_ops);
|
| 2167 |
|
|
}
|
| 2168 |
|
|
|
| 2169 |
|
|
static void rs_remove_debugfs(void *priv, void *priv_sta)
|
| 2170 |
|
|
{
|
| 2171 |
|
|
struct iwl_rate_scale_priv *rs_priv = priv_sta;
|
| 2172 |
|
|
debugfs_remove(rs_priv->rs_sta_dbgfs_scale_table_file);
|
| 2173 |
|
|
debugfs_remove(rs_priv->rs_sta_dbgfs_stats_table_file);
|
| 2174 |
|
|
}
|
| 2175 |
|
|
#endif
|
| 2176 |
|
|
|
| 2177 |
|
|
static struct rate_control_ops rs_ops = {
|
| 2178 |
|
|
.module = NULL,
|
| 2179 |
|
|
.name = RS_NAME,
|
| 2180 |
|
|
.tx_status = rs_tx_status,
|
| 2181 |
|
|
.get_rate = rs_get_rate,
|
| 2182 |
|
|
.rate_init = rs_rate_init,
|
| 2183 |
|
|
.clear = rs_clear,
|
| 2184 |
|
|
.alloc = rs_alloc,
|
| 2185 |
|
|
.free = rs_free,
|
| 2186 |
|
|
.alloc_sta = rs_alloc_sta,
|
| 2187 |
|
|
.free_sta = rs_free_sta,
|
| 2188 |
|
|
#ifdef CONFIG_MAC80211_DEBUGFS
|
| 2189 |
|
|
.add_sta_debugfs = rs_add_debugfs,
|
| 2190 |
|
|
.remove_sta_debugfs = rs_remove_debugfs,
|
| 2191 |
|
|
#endif
|
| 2192 |
|
|
};
|
| 2193 |
|
|
|
| 2194 |
|
|
int iwl_fill_rs_info(struct ieee80211_hw *hw, char *buf, u8 sta_id)
|
| 2195 |
|
|
{
|
| 2196 |
|
|
struct ieee80211_local *local = hw_to_local(hw);
|
| 2197 |
|
|
struct iwl_priv *priv = hw->priv;
|
| 2198 |
|
|
struct iwl_rate_scale_priv *rs_priv;
|
| 2199 |
|
|
struct sta_info *sta;
|
| 2200 |
|
|
int count = 0, i;
|
| 2201 |
|
|
u32 samples = 0, success = 0, good = 0;
|
| 2202 |
|
|
unsigned long now = jiffies;
|
| 2203 |
|
|
u32 max_time = 0;
|
| 2204 |
|
|
u8 lq_type, antenna;
|
| 2205 |
|
|
|
| 2206 |
|
|
sta = sta_info_get(local, priv->stations[sta_id].sta.sta.addr);
|
| 2207 |
|
|
if (!sta || !sta->rate_ctrl_priv) {
|
| 2208 |
|
|
if (sta) {
|
| 2209 |
|
|
sta_info_put(sta);
|
| 2210 |
|
|
IWL_DEBUG_RATE("leave - no private rate data!\n");
|
| 2211 |
|
|
} else
|
| 2212 |
|
|
IWL_DEBUG_RATE("leave - no station!\n");
|
| 2213 |
|
|
return sprintf(buf, "station %d not found\n", sta_id);
|
| 2214 |
|
|
}
|
| 2215 |
|
|
|
| 2216 |
|
|
rs_priv = (void *)sta->rate_ctrl_priv;
|
| 2217 |
|
|
|
| 2218 |
|
|
lq_type = rs_priv->lq_info[rs_priv->active_tbl].lq_type;
|
| 2219 |
|
|
antenna = rs_priv->lq_info[rs_priv->active_tbl].antenna_type;
|
| 2220 |
|
|
|
| 2221 |
|
|
if (is_legacy(lq_type))
|
| 2222 |
|
|
i = IWL_RATE_54M_INDEX;
|
| 2223 |
|
|
else
|
| 2224 |
|
|
i = IWL_RATE_60M_INDEX;
|
| 2225 |
|
|
while (1) {
|
| 2226 |
|
|
u64 mask;
|
| 2227 |
|
|
int j;
|
| 2228 |
|
|
int active = rs_priv->active_tbl;
|
| 2229 |
|
|
|
| 2230 |
|
|
count +=
|
| 2231 |
|
|
sprintf(&buf[count], " %2dMbs: ", iwl_rates[i].ieee / 2);
|
| 2232 |
|
|
|
| 2233 |
|
|
mask = (1ULL << (IWL_RATE_MAX_WINDOW - 1));
|
| 2234 |
|
|
for (j = 0; j < IWL_RATE_MAX_WINDOW; j++, mask >>= 1)
|
| 2235 |
|
|
buf[count++] =
|
| 2236 |
|
|
(rs_priv->lq_info[active].win[i].data & mask)
|
| 2237 |
|
|
? '1' : '0';
|
| 2238 |
|
|
|
| 2239 |
|
|
samples += rs_priv->lq_info[active].win[i].counter;
|
| 2240 |
|
|
good += rs_priv->lq_info[active].win[i].success_counter;
|
| 2241 |
|
|
success += rs_priv->lq_info[active].win[i].success_counter *
|
| 2242 |
|
|
iwl_rates[i].ieee;
|
| 2243 |
|
|
|
| 2244 |
|
|
if (rs_priv->lq_info[active].win[i].stamp) {
|
| 2245 |
|
|
int delta =
|
| 2246 |
|
|
jiffies_to_msecs(now -
|
| 2247 |
|
|
rs_priv->lq_info[active].win[i].stamp);
|
| 2248 |
|
|
|
| 2249 |
|
|
if (delta > max_time)
|
| 2250 |
|
|
max_time = delta;
|
| 2251 |
|
|
|
| 2252 |
|
|
count += sprintf(&buf[count], "%5dms\n", delta);
|
| 2253 |
|
|
} else
|
| 2254 |
|
|
buf[count++] = '\n';
|
| 2255 |
|
|
|
| 2256 |
|
|
j = iwl_get_prev_ieee_rate(i);
|
| 2257 |
|
|
if (j == i)
|
| 2258 |
|
|
break;
|
| 2259 |
|
|
i = j;
|
| 2260 |
|
|
}
|
| 2261 |
|
|
|
| 2262 |
|
|
/* Display the average rate of all samples taken.
|
| 2263 |
|
|
*
|
| 2264 |
|
|
* NOTE: We multiple # of samples by 2 since the IEEE measurement
|
| 2265 |
|
|
* added from iwl_rates is actually 2X the rate */
|
| 2266 |
|
|
if (samples)
|
| 2267 |
|
|
count += sprintf(&buf[count],
|
| 2268 |
|
|
"\nAverage rate is %3d.%02dMbs over last %4dms\n"
|
| 2269 |
|
|
"%3d%% success (%d good packets over %d tries)\n",
|
| 2270 |
|
|
success / (2 * samples), (success * 5 / samples) % 10,
|
| 2271 |
|
|
max_time, good * 100 / samples, good, samples);
|
| 2272 |
|
|
else
|
| 2273 |
|
|
count += sprintf(&buf[count], "\nAverage rate: 0Mbs\n");
|
| 2274 |
|
|
count += sprintf(&buf[count], "\nrate scale type %d anntena %d "
|
| 2275 |
|
|
"active_search %d rate index %d\n", lq_type, antenna,
|
| 2276 |
|
|
rs_priv->search_better_tbl, sta->last_txrate);
|
| 2277 |
|
|
|
| 2278 |
|
|
sta_info_put(sta);
|
| 2279 |
|
|
return count;
|
| 2280 |
|
|
}
|
| 2281 |
|
|
|
| 2282 |
|
|
void iwl_rate_scale_init(struct ieee80211_hw *hw, s32 sta_id)
|
| 2283 |
|
|
{
|
| 2284 |
|
|
struct iwl_priv *priv = hw->priv;
|
| 2285 |
|
|
|
| 2286 |
|
|
priv->lq_mngr.lq_ready = 1;
|
| 2287 |
|
|
}
|
| 2288 |
|
|
|
| 2289 |
|
|
void iwl_rate_control_register(struct ieee80211_hw *hw)
|
| 2290 |
|
|
{
|
| 2291 |
|
|
ieee80211_rate_control_register(&rs_ops);
|
| 2292 |
|
|
}
|
| 2293 |
|
|
|
| 2294 |
|
|
void iwl_rate_control_unregister(struct ieee80211_hw *hw)
|
| 2295 |
|
|
{
|
| 2296 |
|
|
ieee80211_rate_control_unregister(&rs_ops);
|
| 2297 |
|
|
}
|
| 2298 |
|
|
|
